Relax! The rehearsal dinner doesn't matter. Don't worry about it.
On the menu question, I don't think it would be bossy to ask them about the menu...but emailing it to all the attendees would be overkill. Trust me - they won't care.
For our RD, we discussed it with my MIL and told her that we wanted an intimate dinner with our WP, parents, and siblings - no OOT guests. She agreed, told us her budget, and asked us to suggest a place. (Our wedding was in the area where we live now, so my ILs didn't know the area well enough to find a place on their own) We found a great place and made all the arrangements. Three weeks before the wedding, I got a call from my MIL, telling me that she didn't have as much money for the RD as she expected. To cut down the costs, she suggested that we do the dinner with just our WP, no parents or siblings. DH and I didn't like that idea, so we started looking for a cheaper place that could accomodate a group of our size with only 2-3 weeks notice. We finally settled on a private area at an Irish pub/restaurant that we like. After all that, at the last minute (I'm not kidding - it was either the day before or earlier that morning), my MIL called and added more guests, all OOT family members of hers. I guess her mother pressured her to add them, but it REALLY bothered me because she had told us that money was an issue. Plus, she didn't offer to add MY OOT family members - though at that point, I just said, 'Screw it' and called them to see if they could come, but they had all made other plans by that time. The whole thing really bugged me because 1) She spent as much for more people at a more casual restaurant than she would have spent on the original group at the original restaurant, 2) The one thing we asked for was that the RD be a small, intimate group, 3) I ended up planning not one, but TWO RDs...and I didn't even want to be involved in the first place.
The extra guests also presented my MIL with another challenge: transportation. Our reception location and guest hotel were about a 20-minute drive from the church. Since we hadn't planned on inviting OOT guests, we planned the RD at a place that was convenient for the WP, who would be coming from the church. My MIL had rented a large van to transport her OOT family members to and from the airport (I told her that there was a shuttle, but she insisted on driving around to three different airports the day before the wedding). She drove the van from the hotel to the church for the rehearsal. Then she drove back to the hotel (in rush-hour traffic) to pick up everyone else and drive back to the RD location (again, in rush-hour traffic). And since she doesn't know the area, she got lost. My ILs and their guests ended up being 2 hours late to our RD. Worst idea ever.
Anyway, none of it matters. It was annoying at the time, but the wedding the next day went perfectly, and that's what people remember. So don't stress over the RD. Even if it's an absolute disaster, it just doesn't matter in the long run.

Vice President and Guardian of the Toilet Brush of POOP: People Offended by Offended People