InVinoVeritas
Adventurer
But not to a gaming store that happens to sell snacks! When I go to Sydney the shop I got to is in a street with a lot of fast food outlets, we usually put our stuff down before the session and then get something to eat.
You will need to have a policy on outside food if you will be selling it, or else be in a place where people can get it easy. if you're not going to sell food aside from snacks, maybe get to know a few take-away businesses that are in your area.
This goes back to the question of what the store is. Is it a cafe with a gaming store? Or is it a gaming store with a cafe? The answer is extremely important.