Sounds like a small group for dinner this time. I've make reservations for 6pm at Osterio Marco, a very nice sounding Italian restaurant in Larimer Sq, about 5 easy walking blocks from the Convention Center and many of the ACS hotels. I told them we might be joined by a few extra, so don't hesitate to breeze in at the last minute or even a bit late, and feel free to call me if you need, 607.793.6217. I understand there is also a nice bar with lovely appetizers if you arrive early and need a drink.
The original restaurant had a large party shift their reservation so they wouldn't be able to seat us until 9pm. However, the Venice Ristorante sounds good too and I've confirmed a table at 6pm. It is about 7 blocks from the Convention Center area, there is a free shuttle down 16th street. Italian seems to be the running favorite in this part of Denver.