My guess is more like 75,000 people in the summer.
Whatever you do, drink 8 to 10 - 8 oz glasses a water a day, to stay hydrated.
Last summer was the hottest in the last ten years, but still bearable. 3 and 4 PM is the hottest part of the day. Plan activities for early in the morning or later in the evening.
Have a great time.
__________________
"It doesn't cost "nuttin", to be nice". 
MOM
I just want to do the right thing! Uncle Joe, (my hero).