I am staying at Moon Palace, arriving 5-15. I want to see Chichen Itza, nut noticed a light and sound tour as well. What is the difference? Also I noticed the tour leaves at around 11:00am, if the drive is 2.5-3 hours it would place us at the lacation at about 2:00-3:00. I assume the show is at night so what do we do for the approximate 5 hours until it gets dark?