ohhhh Lorrrd....
this reminds me of my little's wedding. one of the ushers didn't show up AT THE LAST MINUTE!! So you're lucky you at least have the advance notice.
did the groomsmen already rent their tuxes?? I have the feeling that if one of them didn't have to rent a tux, he wouldn't mind, as long as he got to go to the bachelor party.
If that's all already set though, I would say grab a relative - particularly if you have any teenage cousins who would love nothing more than wearing a fancy dress and feeling grownup with an older man escorting them.
