It serves as a reminder to make sure you drink enough water through the day , especially if you are unaccustomed to the heat and that much walking ! The rides are WAY over the top loud too imo .

Question: Why does one need to stay properly hydrated in this activity ?
Answer: Hydration is key to the fact there is high heat .None of the above choices .Hydration is key to the fact there is water to be donated .Hydration is key to the fact there is a charity event taking place .