All the above that others have mentioned. I've not been to Paducah, but we are going this year. We have been to other shows.
Remember to do a lot of stretching, bending over once in a while to stretch out your back. I was in so much pain for several days after the show from walking even with comfortable shoes. I will take a smaller purse this time around - and let my DH carry the bag of goodies!
Check out the web site and see what classes are being offered. They fill up fast so if you want to take any classes book them as early as you can.
I know there are several vendors that will be open down town in store fronts.