I was there last weekend for the first time. My impression was: 5-8 pre-theater crowd, 9-closing hang out bar for Depaul students. Kind of an old crowd morphing into a young crowd as the night goes on. Food was good, but our meal (2 entrees, 2 apps, dessert, $50 bottle of wine) came to $175 and for that we could have done much better elsewhere. If you do end up there, though, order the giant chocolate chip cookie dessert.
If you like sushi, Mirai is very good, if not quite the scene of Japonais. Mercat a la Planxa is my recent favorite restaurant - Catalonian tapas, but nothing like any other Spanish Tapas I have had. I'd say its the most significant new opening in Chicago over the past few months. Another fun place with good food and fun people watching is Carnivale (Pan-Latin food) - its also enormous so I'd think you can still get reservations. Or you could try Frontera Grill. Let us know if there is something else you'd like and if you want other recommendations.