If my order tastes terrible, how can I tell the hotel manager to change it?

If it is a technical problem of the hotel chef, just say it out, and the manager will not refute it;

If your order is not to your taste, please tell the manager gently, it's no big deal, and pay attention to the tone of discussion. I think if the boss is reasonable (in other words, if he can do business), he will understand you and negotiate with you, ok. But, of course, I must feel sorry for the loss of the hotel.