There are some things I like about Imperial Palace, but the food is not one of them. The monstrosity of IP's cuisine is epitomized by Burger Palace, a fast-food hamburger place that's significantly lower quality than McDonald's but charges a lot more. Do not eat here. Ever.
Edit: In the 1.5+ years since I wrote this review, a couple of good restaurants have opened up in IP. All the more reason to avoid Burger Palace.