Actually, the reason is very simple.
Mainly because the menu occupies a lot of space on the table, which affects the dining experience. It is also a more humane measure. It was originally a big menu, occupying more than half of the table. Where should I put the food when serving? Naturally, we have to take away the menu. Take away the menu when eating, so that guests can focus on the food and people in front of them instead of being hindered by the menu.
Protect menu. It costs money to make menus, so the number of menus in each restaurant is limited. No restaurant will prepare a menu for each seat, so the limited menu must be used between different guests. If the guest asks to leave the menu, the waiter will be happy to do so. If the guest decides to order more dishes, the waiter will be happy to send another menu.
Customers will face the problem of checkout after eating. The waiter will count the details of the order and feedback it to the cashier at the front desk as evidence. Most customers will not remember the price of the order after placing an order, which can be used as evidence when customers raise objections. At the same time, the cashier also knows how much to charge.
Although it is said that catering is not confidential now, this behavior is also to prevent peers from asking too much. After all, the price is clearly marked on it, so as long as you have a meal there, the passenger flow will be almost the same. When we are on a business trip, we always ask the waiter to study with the menu first.
Nowadays, consumers' rights and interests are more and more protected. If you want to tamper with the menu, you can complain about exposure online. Hotels are not stupid. Why did you do such a thing?