Other than beer, best retail price for adult beverages is at the incoming duty-free shop in the International Airport.
Less than half what you pay for the same stuff in San Pedro.
Example - good wine - $6 US a bottle (same stuff is about $18 US here)
Similar savings on vodka, plus they stock Russian Standard which to my mind is the best, and is unavailable on AC.
They also have the usual other premium brands of whiskey, scotch etc.
You can get 5 or 6 bottles per adult. Hopefully that is enough for a week ......
Beer - best place is right from the distributor in San Pedro.