27 CFR §6.85

1. (a)General. The furnishing of things of value to a temporary retailer does not constitute a means to induce within the meaning of section 105(b)(3) of the Act.
2. (b)Definition. For purposes of administering this part, a temporary retailer is a dealer who is not engaged in business as a retailer for more than four consecutive days per event, and for not more than five events in a calendar year.