I can't tell you about the air or getting off of the ship because my first Celebrity is still a couple of weeks off.
As far as the beer package from the cruise boards that I read, about 6 beers a day is the break even point. This package is what I bought while on the Century, drinking 6 beers is just knocking the dust off for me. The frozen drink package is cheaper if you like that kind of drink. I have read the break even point is 3 drinks per day. You can order them with or without the booze. They will make you any drink they can as long as it is frozen. Hope this helps a little.
11-1974 To 03-1978 U.S.S. Saratoga CV-60
08-2000 Sovereign Of The Seas- Bahamas
06-2002 NCL Sky- Alaska
10-2004 Majesty Of The Seas- Bahamas
10-2006 Majesty Of The Seas- Bahamas
12-2006 Enchantment Of The Seas- Western Carib.
05-2008 Monarch Of The Seas- Baja Mexico
09-2009 NCL Sky- Bahamas
03-2010 Celebrity Century- Western Carib.
10-2010 Majesty Of The Seas- Bahamas
10-2010 Liberty Of The Seas- Coco Cay
11-2010 Freedom Of The Seas- Labadee, Haiti
11-2010 Monarch Of The Seas- Bahamas