I have a large check list!!
something to cover your items quickly in the event of a sudden rain shower and to cover the sides of the rent at night-most of these events will have security but check!
snacks,water,sunscreen, baby wipes and hand sanitizer, business cards(you will have tons of other craft shows looking for vendors for their show)
take something to work on!! it draws attention and they will come look! I have been invited so several shows this fall because I demonstrate my craft!
Be aware- this isnt a quilt show they will want to touch!!
some shows I do better with small items some with large
as someone else said don't get discouraged!