Probably depends on how much you drink and how may times you want to eat at places like Ivan's or Kuyaba. We can do quite well with $100/day for food and drink as long as we keep our own stash of drinks in the room and watch what we eat. Best in the West makes a fine dinner and the Patty Man and the fruit vendors have some really great lunches. If we eat out all three meals and buy a bunch of foo foo drinks, we could easily reach the AI level.