I think you could definitely regift them if you don't want to drink them yourselves. Regifting can be skeevy if it's a present that someone has bought especially for you and has put thought into it and so on, but a bottle of wine is a generic gift, and not really a gift at all in this context, more a contribution or thank-you for hosting the party. So you could certainly give them to other people who would appreciate them more than you.
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