At the store, we were informed that the driver's age did not meet the requirements, and we were forcibly downgraded. We saw all the cars in the store at a glance, and there was no car that matched our booking. However, the keys were already prepared. It was obvious that they knew about the age issue in advance, but neither the rental company nor the booking platform informed us beforehand. We were aware of the young driver fee, but did not expect to be downgraded. Luckily, the car they gave us had decent space in the back, and we could fit our luggage.