Recommendations for Twin Cities Rehearsal Dinner
Mentioned above, I've heard good things about Loring Pasta Bar as a rehearsal dinner space. I believe you can rent just the upstairs. It is in Dinkytown by the University of Minnesota, although relatively close to downtown.
I also like Firelake's private spaces - they have a board room for about 10, or a few larger rooms that can be configured for different size groups. It is in the heart of downtown. I think Solera might be a great option, although perhaps over budget. I think their room charge is quite high.
We had a post-wedding party at Nye's in December. Yes, the food is not spectacular but it was incredibly fun. We got the whole back room to ourselves with our own bar and bartender.
We also looked into Al Vento in S. MInneapolis - they will rent out their back room for private parties.
Also, based on our recent rehearsal dinner experience, go somewhere where you can have a completely private room. Ours was in Manhattan in a restaurant that had thick velvet curtains that separated areas within one big space. Our rehearsal dinner was awesome, so much fun I forgot we had to get married the next day, but people wanted to give speeches and toasts and it was hard with all the background noise.
The Twin Cities Originals web page has a list of member restaurants with party rooms. Only a few are in downtown/uptown Mpls: The Dakota (fancy), Murray's (expensive), Rudolph's (BBQ/not the best in town), and Nicollet Island Inn (expensive but pretty).
I'm not sure I can recommend any of these (haven't been to Murray's or the Dakota, didn't like the food at Nicollet Island Inn a few years ago, and Rudolph's is onl so-so). But here's the link in case you want to do more research on party rooms.
I've found private dining for 20-30 people, unfortunately, a little hard to come by around here (compared with say, Chicago). You're mostly going to be looking at fine(r) dining chairs like Capital Grill and Palamino. Not bad places to eat at all, but not necessarily the best of what the TC has to offer IMO.
Lurcat (Dowtown, likely over budget) http://www.cafelurcat.com/
Solera (Downtown, likely over budget) http://www.solera-restaurant.com/
Capital Grille (Downtown, maybe over budget) http://www.thecapitalgrille.com
Azia (Eat Street Mpls, not quite private, maybe over budget) http://www.aziarestaurant.com/
Loring Pasta Bar (in Dinkytown Mpls, but under budget) http://www.loringcafe.com/
Rossi's (Downtown, steakhouse, over-budget) http://www.rossissteakhouse.com/
Vincent (Downtown, likely over-budget) http://www.vincentarestaurant.com/
20.21 skyline room (In the Walker, over-budget
Palomino (Downtown, maybe over budget) http://www.palomino.com/
Drink (Uptown, last resort IMO
)Stella's (Uptown, hope your guests like seafood) http://www.stellasfishcafe.com/
Chino Latino (Uptown, I would not recommend this at all
112 Eatery (current darling) just opened their second floor, however, I do not believe their kitchen could take a party of 10 much less 30.
There are several patios that might be available as well in July for reservation including Stella's and Joe's Garage (Drink Uptown has a large patio as well).
I am sure I left out a ton...congratulations and all the best.