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You are allowed to bring on two bottles of wine per stateroom at the start of the cruise. As anniversary is on board make sure your t/a has put this in your reservation. They only recognise certain years but it is worth a shot.
Just let the line knoe you are celebrating and there will be no problem infact if you want to they will bring cake etc. at dinner. no problem at all to take wine champagne on board at all have lovely happy celebration.