As others said, catering forum will have some details for you.
In short... it's illegal and you could lose everything without insurance, which you can't get without being up and up.
That said, there's probably many people doing it.
Neil -- "Easy Bake Master"
NB Bandera [gone to heaven...conveniently located in Long Island, NY]
Rebel 23, WSM A, WSM B, UDS, Easy Bake Oven
Pork Pistols BBQ
MOINK...It's what's for linner.