I dined here tonight (4/25/10) and chose from their prix fixe menu. Everything about the dinner was perfect. The service was excellent. Usually, there were two or three waiters/bus staff at a table when a course was brought. I was brought a second iced tea when I still had 1/3 glass remaining and I didn't have to ask. The meal was wonderful. I had the Duck Confit Caesar salad for an appetizer, Filet Mignon and Crab Gratin for the main course, and Buttermilk Spice Cake for dessert.
The ambience of Kokomo's is very nice. If you're familiar with the Mirage, it's a part of the area under the dome - the atrium with live palm trees, blooming orchids, and tourists in the distance walking through the atrium.
A friend suggested this was a good place to go after dark when the room is darker with soft lighting. I can understand that now, and I plan to return for a dinner when it's dark out.
I was so pleased with the dinner and the staff that I know I will be returning!