A friend booked a wedding banquet at the hotel and paid the deposit. Now he is told by the hotel that someone has booked it first that day. How should the hotel compensate for the breach of contract?

it is a breach of contract that requires the hotel to bear the liability for compensation. The deposit is an offer contract. If the other party breaches the contract, it will bear the corresponding responsibility. For example, if your friend doesn't go behind, I'm sure they won't refund the deposit to you. There are people in the world who can't get in and out. If you can't find a suitable hotel on time, you can ask them to compensate for all the losses. The deposit is usually 2% to 3%, so you can ask them to accompany 33 to 5 as liquidated damages. And the cost of tossing in the middle. Because these are all caused by their wrong behavior, it is unnecessary for you to lose.