I bet this applies for Houston too. I go to the biggest quilt show here in Europe every year (much smaller than Houston, I'm told, but plenty big enough for me). Because I can't hop all over the world I always check who is at the show from places I don't get to. That goes for vendors, workshops, lectures, special exhibits. So, in my case I look for quilters from the US, Australia, Russia, etc. You may decide to look for Europe and Australia. I had a fantastic time with Lisa Walton and Michele Hill (both Australian) one year, Frieda Anderson and Laura Wasilowski were brilliant. My big treat this year is Patti Hempen. Russian quilt exhibitions are always amazing. I can 'catch' the UK quilters and vendors every year, but not the folks who come from across the world.
May I also suggest that you carry a small bottle of water with you. It always surprises me how dry the atmosphere in big halls is, and if you de-hydrate a bit you'll get a nasty headache that'll stop you enjoying yourself.
Look at the quilts at the beginning of your day, and shop at the end of the day. That way you don't carry all your 'must have' purchases around with you.
If you go to Houston with friends, make sure that you have exchanged your mobile phone numbers, and that your phone's battery is charged. So if you split up it's easier to meet again.
I also often have a pack of small cards with me, with my name, email address, phone number, etc. So if you want to give it to somebody you don't have to hunt around for a spare piece of paper. Carry a notebook and pen. I scribble down all sorts of things at quilt shows.
Finally, Lois: Go, go, go........ You deserve to have some fun!!