I'd also like to add that Lao Szechuan is able to accomodate fairly large parties with little to no advance notice (although it's always a better idea to plan ahead, if possible). They have an upstairs dining room that's more quiet, overall, than the downstairs dining room, mostly because the upstairs just isn't used much.
I'm not sure about a large party, but Penang (in Chinatown) has fairly Americanized Pan-Asian food (ostensibly, they're a Malaysian restaurant, but offer a range of SE Asian food, as well as sushi). The food will not knock your socks off, but if that's not the main issue, then you might think about it.
(On a side, Americanized Asian food note, I had lunch today at Big Bowl on Ohio, just west of Michigan. A friend really enjoys their food, so I probably end up going a few times a year with her. The last time we went was shortly before the return to LEYE management, and the food was terrible (as was the service). I'm happy - and to be honest, a little surprised - to report that the food not only wasn't terrible, but...well, it was kind of good. The green beans were very spicy, the peanut noodles were more than serviceable, and my Diet Coke was cold. I can't ask for much more from a large, national chain just off of Michigan Ave.)