How long does it take to pay the hotel deposit with WeChat after check-out?

Usually it should arrive within two hours.

Pay by WeChat. If you associate with a credit card, the refund is estimated to take 24 hours. If you pre-authorize, you can directly cancel the authorization, and there is no question of how long it will take to arrive.

You can ask the hotel front desk directly when you pay or refund. They are well aware of these things.