ruacajun2, thank you very much! I have a phone number I tried earlier, but no answer, so was going to call later in the morning. I guess I'll add "backpack" to the Walmart list - this was my original plan anyway, so I don't have to deal with hauling things around.
Thanks to all who responded, and to those of you who are going, let's all have a wonderful time!
A great Mexican place is called Irma's - located at 22 North Chenevert Street, 2 blocks north of Minute Maid Park. They are open during weekdays, and at 4PM on Saturdays. I highly recommend the pink lemonade - so much fruit bits they clog up a straw, but it's wonderful!!!