Does studying tourism management really mean serving dishes, being a tour guide, or going to a hotel?

The first is positioning. What will you do after you finish studying tourism management? What processes did you go through to get to the position you want? Will the things in those processes have any impact on your ability to achieve your goals? If the job you are helping, that is, serving dishes, being a tour guide, or going to a hotel, can allow you to understand each link, there is no problem in doing it. If it is different from what you want, then you have to consider whether to do it. After all, Human time and energy are limited.