We have an upcoming cruise the Century, the documents address this by saying" Celebrity Cruises reserves the right to limit OR refuses to allow alcholic beverages to be brought aboard the ship for consumption during the cruise"
We took that to mean that we should be able to bring a couple bottles of wine on board to enjoy in our cabin.
Be aware there is a $15usd corkage fee if you enjoy your wine in the dinning room.
Hope this helps
"Integrity begins with I!"