Party of 12 - restaurant recommendation

Usually I'm the one recommending the restaurants, but I need help!
My family is coming in town next month for my brother's graduation and we need helpf finding a place for Saturday night dinner for 12. They're staying off N. Michigan. We're eating out for Italian the next night so I need something else. Not too expensive and not too loud because I have two 80-some year old grandmothers.
Grand Lux doesn't take reservations on Saturdays. They've been to Bistro 110 before. Other suggestions in the neighborhood?

How about Bandera? The only times I've been to Bandera were with out-of-towners ... but they seemed to enjoy it. The room is pretty, the food isn't confrontational and the view is outstanding.

535 North Michigan Avenue
Chicago, Illinois 60611-3814

Off the top of my head, some North Boul Mich, non-wallet-breaking options include The Saloon, The Grill on the Alley and Rosebud on Rush. The Grill on the Alley has a small room that could probably fit 12 if you want something more private.

The Saloon
200 E. Chestnut
312-280-5454

Grill on the Alley
909 N. Michigan
312-255-9009

Rosebud on Rush
720 N. Rush
312-266-6444

Some other options:

Cafe Spiaggia
312/280-2755
www.cafespiaggia.com
980 N. Michigan Ave., 2nd Floor, Chicago
Less pricey sister of Spiaggia.

Chestnut Grill & Wine Bar
312/266-4500
Seneca Hotel
200 E. Chestnut St., Chicago
Classic Continental cuisine and stay on and hear Nan Mason in the bar.

McCormick & Schmick's Seafood Restaurant
312/397-9500
www.mccormickandschmicks.com
Railroad Union Building
41 E. Chestnut St., Chicago
Good seafood and nice Chicago-oriented decor.

Mike Ditka's Restaurant
312/587-8989
www.mikeditkaschicago.com
Tremont Hotel
100 E. Chestnut St., Chicago
Good chophouse fare and possibly a chance to see da Coach.

Tucci Benucch
312/266-2500
www.lettuceentertainyou.com
900 N. Michigan Ave., Fifth Floor, Chicago
Pleasant Italian.

I have a friend who recently attended a dinner for ten at Alinea -- Ouf. I wouldn't want to see that bill!
I've always found Greek Islands fun for a group. Pedestrian, maybe, but they're used to group dining so they can handle it well and don't get all flustered and out of sorts like they do at some other places. I also have had a few good large group experiences at Sangria tapas bar in the Weed St. District.

How about Bin 36?

I did a party there for about that size. They made a special menu for us and gave us a per-person rate that was pretty reasonable.