I was there for one day and spent about $70 (considering the fact that I am a vegetarian and had only a fraction of the options a normal person could choose from, I'd add at least $30 more for a meat eater). My drink of choice is champagne, so not cheap drinks, but I only had 3 I believe.
When I return next year with my husband and 4 kids (they will be two almost three year olds, 4, and 6) I am budgeting $300 to snack around the world that day.