personaly i walk around get cards from breeders i like, take pics and handle some animals. you can buy everything food, substate, vivs, ect... 20g longs are about 27 bucks, 12 for the mesh tops. comkpard to petco 47-50$. and if you buy a snake dont get anything to small that looks like it hasnt eaten and asked questions before you buy. like age, feeding pattern, how much it ate before the show. and shop around before you pic out a snake. :cheers: hope you get to go and have fun.
p.s most of the vendors wont sell to you so try to bring a adult.