I took mine last month in some of the worst Texas heat on top of a huge black asphalt parking lot. Luckily, they rescheduled us for 6AM rather than 9AM and did the riding in the morning to spare us some of the heat exhaustion. Remember to drink water every hour even if you don't "feel" thirsty. By the end of the weekend (and pending your exam) you realize it was all worth it!