You run the risk of losing data if you do not have an Uniterruptible Power Supply on your computer. If you have an air conditioner in your office, make sure that it is not on the same circuit as your computer. Air conditioners draw a lot of power when they run and could cause your computer to lose data if they are plugged into the same circuit as the computer. Drink lots of fluids, wear lose, light colored clothing and take it easy. Work during the early morning hours when it is cool.
Heat makes everyone uptight.
Keeping cool will make the fair more enjoyable for everyone.