That is one of the unique attractions of Belize and especially Ambergris Caye. No one has ever been known to come here and not be able to spend as much as they wished and leave as much behind as they planed(sometimes more than they planed).
Depends on how long you stay at the bar. Food, approx $25/50 per day per person unless you eat at Capricorn every night, then double it. It is possible to eat for $15/20 per day. Just depends on you budget. Hope this helps.