Transporting them home definitely needs a plan because it will be so hot. Do not leave anything live in your car! Cracking the windows will not help! I would even suggest having someone go crank the car up to get the AC going before you get in with your animals. Plan on fast food drive through on the way home. The point is, don't leave them in a hot car. It will probably be 100 degrees plus in that hot parking lot, and even hotter in a shut car.

The vendors supple deli cups and snake bags for the animals they sell. You will get a free "goodie bag" with like a sticker and some trial fish food. We usually put animals in that while we are walking around or just hold them. You can bring a backpack in too.

Sometimes vendors will hold an animal that you have already paid for at the booth until you are ready to leave. Most of the animals there are going to be small, while larger adult species (blackhead pythons I saw last year) are going to have a hefty price tag and I would imagine the vendor would be happy to hold them at the booth for you till you are ready to leave.