I'm having a good friend of mine and her husband read in my wedding. It was something that was kind of decided spur-of-the-moment, and I called and asked her to do it without giving it a ton of thought. I have zero regret about that, but now I'm worried about the rehearsal dinner because they have four kids. Is the expectation that everyone who is in the wedding brings their kids with them to the rehearsal dinner? My brother is bringing his kids, but they're family and they're kind of in the wedding. These are kids I don't know well and are a little wild, although honestly, that's not a big deal. The bigger deal is just the sheer number of people, because we're on a really tight budget. What are the expectations in this situation?