Weddingbee boards

So we actually have relatively little family drama (knock on wood). But there is one sticking point..

My aunt and uncle had a really messy divorce a few years ago. They have a college-age daughter. Uncle has since remarried (to the woman he basically left my aunt for). As far as my family is aware, they're civil for their daughters' sake but that's about it.

Since the beginning I felt really strongly about including my aunt in the wedding festivities if she wanted to come. She was my aunt for my entire under-18 life.  My plan is to just seat them far apart at the reception if they all choose to come, and give my aunt a plus one so she can bring someone if it makes her feel more comfortable.

I haven't changed my mind, but I didn't quite think through the other logistics. For example... all of the parties are from OOT, so should I invite them all to the rehearsal dinner? None? Should I go a step above and seat them in different rooms if we end up using our spillover room?

Anyone else have a similar problem? How did you address it?

@atalante:  Are you inviting everyone who is OOT to the rehearsal dinner, or just the wedding party itself?

@creativeplannertobee:  My plan was to do everyone OOT who comes in the night before. I kind of feel like that's what a host should do, and it's in our budget.  But I'm thinking I might just limit the RD guest list to participants and a few members of my FI's family that are staying with my FMIL if that's what it takes. Because if I cut the remarried pair, I have to cut another aunt/uncle that they're staying with, and if I cut my aunt, she'll know I invited her daughter and exhusband..

@vickyness:  I think that's a good point.. that's kind of where my mind was going when I was typing the last thing. I think we'll just keep it small, and invite the people involved with the ceremony (and those staying with them from OOT, like the people staying with my FMIL, etc).