This hasn't happened YET but we ended up with a somewhat large wedding party (1 BM and 1 MOH, with 5 GM and 5 BMs) which I think will increase the chances that some might decline to come to the rehearsal and rehearsal dinner. Some of them are flaky and not because they don't want to come but usually because they neglected to arrange their schedule in a way to come to something, even if they said they could make it before. I'm not worried about the wedding, they know that's a must and important. I don't mean to make them sound incapable of getting to events.
Many of them were in a wedding I was in last year too and some did not come to her rehearsal. I will say I was not surprised when some couldn't make it because I almost couldn't either. She failed to inform anyone about the details of her rehearsal until the week before. I was very fortunate to be able to get off of work! The bride said we should have known the rehearsal would be that day since everyone has their rehearsal the day before the wedding.
I have already mentioned in casual conversation the date, time, and location of our rehearsal to ALL of them and plan to send a real invite at the appropriate time.
I have two questions. My first one is, is it reasonable to expect the wedding party to attend the rehearsal? Was that something they agreed to by accepting their role? I will understand if someone has to work and couldn't get off or they are sick or other reasonable excuses for being unable to attend. My knee-jerk reaction to someone not coming because they forgot to ask off of work or they just didn't feel like coming would be frustration and annoyance but if that is actually not reasonable to expect of them, then I want to know that so my reaction is altered. Won't be upset if I wasn't supposed to expect that of them (that's why I'm asking BEFORE this happens)!
My next question is, if someone isn't able to attend, how do I fill them in? Do they need to be filled in and practice or just trust them as an adult to figure it out?