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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_AssetAllocationRisksMember_lbl" xml:lang="en-US">Asset Allocation Risks [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_ExchangeTradedNoteRisksMember_lbl" xml:lang="en-US">Exchange-Traded Note Risks [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_ForeignInvestingRisksMember_lbl" xml:lang="en-US">Foreign Investing Risks [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_IlliquidSecuritiesRisksMember_lbl" xml:lang="en-US">Illiquid Securities Risks [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_InitialPublicOfferingsRisksMember_lbl" xml:lang="en-US">Initial Public Offerings Risks [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_LegislationPolicyAndRegulatoryRisksMember_lbl" xml:lang="en-US">Legislation, Policy and Regulatory Risks [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_ManagementRisksMember_lbl" xml:lang="en-US">Management Risks [Member]</link:label>
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      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="riv_MarketEventsRisksMember" xlink:to="riv_MarketEventsRisksMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_MarketEventsRisksMember_lbl" xml:lang="en-US">Market Events Risks [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="riv-20260630.xsd#riv_MasterLimitedPartnershipsRisksMember" xlink:label="riv_MasterLimitedPartnershipsRisksMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="riv_MasterLimitedPartnershipsRisksMember" xlink:to="riv_MasterLimitedPartnershipsRisksMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_MasterLimitedPartnershipsRisksMember_lbl" xml:lang="en-US">Master Limited Partnerships Risks [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_MicroSmallAndMediumSizedCompanyRisksMember_lbl" xml:lang="en-US">Micro-, Small- and Medium-Sized Company Risks [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_OptionsAndFuturesRisksMember_lbl" xml:lang="en-US">Options and Futures Risks [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_PrivateDebtRiskMember_lbl" xml:lang="en-US">Private Debt Risk [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_RealEstateInvestmentTrustREITRisksMember_lbl" xml:lang="en-US">Real Estate Investment Trust (&#147;REIT&#148;) Risks [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_SecuritiesLendingRisksMember_lbl" xml:lang="en-US">Securities Lending Risks [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="riv-20260630.xsd#riv_SecuritiesRisksMember" xlink:label="riv_SecuritiesRisksMember" />
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_SecuritiesRisksMember_lbl" xml:lang="en-US">Securities Risks [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="riv-20260630.xsd#riv_SeniorLoanRisksMember" xlink:label="riv_SeniorLoanRisksMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="riv_SeniorLoanRisksMember" xlink:to="riv_SeniorLoanRisksMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_SeniorLoanRisksMember_lbl" xml:lang="en-US">Senior Loan Risks [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="riv-20260630.xsd#riv_StockholderActivismMember" xlink:label="riv_StockholderActivismMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="riv_StockholderActivismMember" xlink:to="riv_StockholderActivismMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_StockholderActivismMember_lbl" xml:lang="en-US">Stockholder Activism [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="riv-20260630.xsd#riv_ShortSaleRisksMember" xlink:label="riv_ShortSaleRisksMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="riv_ShortSaleRisksMember" xlink:to="riv_ShortSaleRisksMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_ShortSaleRisksMember_lbl" xml:lang="en-US">Short Sale Risks [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="riv-20260630.xsd#riv_SOFRRiskMember" xlink:label="riv_SOFRRiskMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="riv_SOFRRiskMember" xlink:to="riv_SOFRRiskMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_SOFRRiskMember_lbl" xml:lang="en-US">SOFR Risk [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="riv-20260630.xsd#riv_StructuredNotesRisksMember" xlink:label="riv_StructuredNotesRisksMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="riv_StructuredNotesRisksMember" xlink:to="riv_StructuredNotesRisksMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_StructuredNotesRisksMember_lbl" xml:lang="en-US">Structured Notes Risks [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="riv-20260630.xsd#riv_SwapRisksMember" xlink:label="riv_SwapRisksMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="riv_SwapRisksMember" xlink:to="riv_SwapRisksMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_SwapRisksMember_lbl" xml:lang="en-US">Swap Risks [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="riv-20260630.xsd#riv_WarrantRisksMember" xlink:label="riv_WarrantRisksMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="riv_WarrantRisksMember" xlink:to="riv_WarrantRisksMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="riv_WarrantRisksMember_lbl" xml:lang="en-US">Warrant Risks [Member]</link:label>
    </link:labelLink>
</link:linkbase>
