Which department is the core business of the hotel?

Hotels are roughly divided into business hotels and holiday conference hotels. If it is not mainly catering and leisure, the main profit of most hotels comes from the income from selling houses. So if you want to work in the front line, I suggest you go to the front desk or the sales department and start from the front line. If you don't like publicity, you can go to the general manager's office or the human resources department, both of which are good core departments.