My bank had a "temporary ATM" that we set up at fairs and other venues. The only concern that I can think of (other than your usual disclosures regarding fees) would be any unusual restriction on withdrawal limits or a notice if the machine accepts deposits (ours didn't) and the deposits would not be processed under your disclosed funds availability policy. Also, I don't know if your state has rules regarding security, lighting, etc that would apply if the ATM was going to be avaialble after dark. Other than that, I can't think of anything my bank did differently.
BC
_________________________
Being kind is more important than being important.