I dont know what the specific answer to your question is but hope you wont mind me making the following obervations. Dont know how open minded (to discusison) or "fair" minded these people are but it's a 2 way street. You are offering THEM a service that they would otherwise have to provide themselves and that means they would have to get equipment, set aside space, make purchases, pay bills, and rely on volunteers to actuall man the coffee stall and do the work...etc etc etc. That all spells "headache" to them. You are saving them unnecessary work and trouble, are you not? So maybe you need to sit down with them and open up as to how much you are taking, and show them that if they hit you with a site fee, that it's not worth doing...because THEIR CROWD IS NOT giving you enough turnover in return. Like everyone says, you have to pay me so I can pay them so they can in turn pay someone else etc. Just an honest thought. No??? Regardz, FC.