Under what circumstances can an American tour bus driver refuse a passenger?

On an American tour bus,....

1. Follow the tour guide's seat arrangement along the way. You may sit in the front today, and you may sit in the back tomorrow, for several days. It’s different

2. Several scenic spots say that it is necessary to get on the bus at certain times. In the United States, you drive at the same time

3. Although there is a toilet on the bus, everyone is aware of it. Because of fear of smell

4. Eating and smoking are not allowed, otherwise you will be fined

5. Parking locations are generally not changed at will, because illegal parking will also be punished Fine

6. On the way to travel, the tour bus on the opposite side has a coded signal to inform you whether there is a traffic police ahead.