If it is the former, give up all illusions and let them tell you all the registered hotel information through the information desk of 1 14 or 160. All you can do is make a phone call.
If it is the latter, the hotel will contact you forcibly by suing the hotel and compensating for all losses. It's best to master the degree first, and don't turn your face. After all, there is not much time to solve the problem! Let the hotel find a place to accompany you, and there will be more opportunities.
To tell the truth, it is wiser to postpone the wedding date in the future and then book a new hotel on auspicious day! Judging from the marriage density in the past two years, it is unlikely that hotels that have the ability to hold wedding banquets will not hold banquets during the May 1 Golden Week! Unless there is any major change in the couple who were supposed to get married that day. But I suggest you don't have this illusion, or the more you delay, the more trouble you will get.
I hope my answer can help you. Good luck!