Children ages 4 or younger ride for free, but may need to sit on an adult’s lap if the car is crowded. Your ticket is good only for day purchased, between the hours of 9:00am and 5:00pm. The last bus leaves the ticket booth at the first stop at 5:00pm, and returns at 7:00pm. The tour takes approximately two hours to go through the entire loop. The vehicles are open-air.