Booth Activities Operation of Exhibits and Conduct SfN reserves the right to restrict exhibits that become objectionable due to sound, method of operation, materials, content, or any other reason, and prohibit or evict any exhibit that, in the opinion of Exhibit Management, may detract from the general character of the exhibits as a whole. This reservation includes persons, things, conduct, printed matter, food and beverages, or anything of a character Exhibit Management determines is objectionable to the exhibit. In the event of such restriction or eviction, the Society is not liable for any refunds or rentals of other exhibit expenses. Sales & Order-Taking / Seller's Permit Participation in California conventions and trade shows, including sales or taking orders for sales at or during the convention or trade show, generally requires the company to hold either an ongoing or temporary seller’s permit. For in-state retailers, an ongoing seller’s permit must be obtain for the business of selling tangible per...