Was there last May as well, and it was around 95 everyday. We survived just fine, and loved it because people seemed to poop out real early, the key for our family to survive it was:
1) Drank tons of water. Pestered my kids to drink all of the time. Brought ice in empty 20 oz gatorade bottles so it was cold.
2) Sunscreen on before we left hotel room, and brought plenty to re-apply
3) hats for everybody, and sunglasses, girls wore ponytails
4) Took lunch break in air conditioned counter service only
5) had 5 year old in stroller--saved him some extra misery
6) wore as little clothing as decently possible. Both girls and boys wore men's swim trunks(no undies), and we all wore tanks tops.
7) comfy sandals helped me out, and would have benefitted my family. Hate hot sweaty feet!
8) did not use the misting fans much, but had them
9) AQUA COOL NECK BANDS bought at Wal Mart before we left, Soaked in ice water at hotel and brought in plastic bag, then we put them on when we felt the need. I refreshed them throughout the day, but the were VITAL to keeping us cool. In sporting goods dept for under $3, re-usable.
Good Luck! I will go again in May!