Hi Girls-
My wedding is in just over 90 days and I feel like everything is coming together really well. FI and I are footing the bill for the whole enchilada, and we've done quite well sticking to our budget and setting money aside as we've needed to.
Then the other day, it hits me. We need to pay for a rehearsal dinner! Ack! Truth is, I completely forgot about this part of the wedding!
We are having a very small wedding, about 50 guests, 2 attendants each, and 4 kids. We will likely have 2 readings, the 'marriage' ceremony, then the 'family' ceremony, and that's it. We will need to rehearse to make sure everything runs smoothly, I'm not willing to just wing it the day of.
I'd been thinking of asking FMIL if we could head to her condo, which is nearby the wedding site, after the rehearsal and simply put some burgers on the grill with salads, etc. and maybe asking folks to bring a dish to pass. FI and I would foot the bill for the burgers and fixings, drinks, paper goods, and cutlery.
I spoke to my mom about this and she said that instead of 'putting FMIL out' we can just 'all go out to dinner afterward and everyone can pay for themselves'. I know she's trying to be gracious and lift this burden for us and FMIL, but I don't feel right about that. Is that even an option?
Give me some ideas girls, I'm open to anything. Thanks!
Edited for typos.

Meddied since 6/15/13!
Re: Rehearsal dinner??
Or go to a simple restaurant or pizza place & pick up the tab. Or get pizzas & beer and go to a local park or just to your place.
It doesn't have to be fancy, but if you invite them, you should be picking up the tab.
I was lucky, my MIL knew it was her "etiquette-wise" responsibility, and we chose a restaurant near her house and the rehearsal site. I think it was less than $20 per person including alcohol. We didn't stay long, and I supplied the cake from Costco (LOVE them,LOL).
Plan what you can afford, and don't worry about how fancy it is.
H and I each had one attendant. We discussed the flow of the ceremony with the minister a few weeks ahead of time. About an hour before the ceremony, the four of us did a brief walk-through with the minister. Voila! Everything was just fine.
Remember, the officiant has likely performed so many wedding ceremonies that he/she can easily assist the 4 of you with next steps if you forget. Just my $0.02.
Enjoy!