Looking for a fairly centrally-located restaurant good for a large group (approx 20)
Dick's is excellent but that lovely room is quite small. I was there for an event with 15 people and we had to 'juggle the chairs' to get to the restroom. The food is excellent, though.
OP might want to talk to Phoenix City Grille across the street. They've remodeled and may have space. Their food is also good, IMHO.