A hotel asked me to apply for security, but it seems to be internal security, because I am wearing a suit, not a uniform. Is it a fight? What will happen?

As long as it is not serious, it is generally not done. If one or two guests make trouble and the waiter can't solve it, he will invite you. Generally, you don't have to talk about it, just drag it out directly, provided that the account is settled. If you need all of them, there are two situations. First, just pretend to scare people. Two groups of people will PK, and the last P is money. Second, to be serious, we must be conspicuous. If it's true, the boss will support you. As long as they are regular businessmen, they will not take the initiative to hit people.