I had dinner here on a Sunday night before a show, mainly because there aren't many dining options inside Rio. The place looked crowded, but I only had to stand in line for a few minutes. I had the burger sliders (3), which were tasty with the thousand island sauce and pickles. My dining companion had the soup and salad combo with the saddest looking salad I've ever seen. No green lettuce - just the crappy white end pieces. Seriously.
Service was okay, it looked like our server was responsible for a lot of tables. The food took a lot longer than expected.