Notice: 1. After placing an order, the tour guide will be randomly assigned. You are not allowed to discriminate against the tour guide or request to change the tour guide due to race, appearance, age, etc. If you mind, please do not place an order. 2. Please arrive at the designated location 15 minutes in advance of the appointment time to meet the tour guide. Latecomers will have timeslot of your lateness (for example, if you book a 90-minute tour and it starts at 9:00 and ends at 10:30, and you are late and arrive at 9:30, the tour will also end at 10:30). In order to avoid affecting your tour experience, please be sure to arrive early and do not be late. No refund will be given if you are late.