I'm from the wedding company. On September 26th, I held a wedding near my shop. Because the female stereo didn't ring on time, the man made an excuse not to check me.
If it is your fault, it is difficult to provide a solution. First of all, don't pass the buck, and take responsibility bravely, which may cause losses, but if handled properly, it will be very helpful to word-of-mouth publicity! If the guest is really unreasonable, then deal with it by legal means, sue the law or something!