I always give the wine away. Room stewards, butlers, maître ds, waiters, concierges and Cruise Next reps have all received bottles of wine from me using the latitudes coupon. (I use the coupon, get the wine and give it to the person.) I just ask them ahead of time if they want white or red or if they have a specific preference.
There are no rules saying crew can’t accept wine or other treats as long as they are sealed and not homemade and unsealed.