A popular vehicle (roller coaster system) is a sys...

A popular vehicle (roller coaster system) is a system where you can play while making a reservation by putting an app on your smartphone. It's very convenient because you can see the waiting time and always let you know how many minutes are left. From the opening at 10am to the closing at 6pm, there was a picnic at noon (there are many places where you can have a picnic, and of course there are many restaurants). The children (10 and 7 years old) were overjoyed.