Tidy
Do you have any mutual friends who are going to the wedding?
I have a feeling that Gluezilla will spend the entire reception complaining about how you let her down at the last minute and that you are unreliable, etc.
She will certainly have spent the last two weeks moaning to her family and if the mother of the bride is a gossip then no doubt your name will be mud, long before the actual ceremony. Do you have anyone in place to operate a counter-intelligence attack?