Do I understand you to say that a Disney Cruise Lines passenger can bring aboard whatever they'd like for liquor? At what kind of incurred corkage/bottling fee, please? This could be very important information, thanks for mentioning it!
From the Disney site:
Preparing For Your Cruise
May Guests bring alcohol onboard?
Answer: While adult Guests ages 21 and older may bring alcohol onboard, the following guidelines apply:
• Outside alcohol cannot be consumed in any lounge or public area
• At Palo and Remy, a $20 corkage fee will be charged for outside wine and champagne
• Beverages must be packed in your carry-on bag—which must not exceed 22 inches wide, 14 inches high and 9 inches deep in dimension
Coolers filled with personal items (e.g. soda, alcohol, chips, candy, etc.) may not be brought on board.
Please note: Disney Cruise Line reserves the right to remove fragile items (including beverages) from checked luggage. In such cases, items will be stored and returned at the end of the voyage. Beverage containers are considered fragile and have previously caused damage in checked luggage. All fragile items must be transported inside carry-on luggage.