That's the one good thing about Disney, you can bring whatever alcohol you want as much as you want.
On our 7-night cruise, I brought 1/2 gallon of tequila and a 12-pack of beer, then later brought another 12-pack of beer.
It was funny to see people with a case of beer strapped on top of their roll-on luggage.
Just keep in mind that they do charge a corkage fee if you bring your own bottle of wine to the dining room.
45 Cruises & Counting! Favorites: Paul Gauguin to Tahiti: Uniworld River Cruises in Europe; any of the Celebrity Solstice-class ships; Holland America for 12-nights in the Baltics & Russia; RCCL for 14-night Greek Isles, Turkey, & Croatia; Holland America for 14-day Alaska cruisetour; 10-night Canada/New England cruise; 21 days in Hawaii including a 7-night NCL cruise; Oceania for 25 days in Asia; & 3 months touring Europe by train. And many days spent in all-inclusive resorts!