The RPR, a short and pleasan walk from IOA, it has a great sushi restaurant.
Very comfortable furnishings and a great view over looking the pool. They also
have a good kids menu, $6, if you have kids.
No, unless you count the rice crispy treat sushi at Mythos. Citywalk is outside of the park but within the same general compound. Same for RPR.
Very close and walkable. The parks, hotels and citywalk are all part of one big resort area. They are well laid out and very easy to walk from one area to the other.Yes you leave the park to get to different areas but getting in and out is so easy and you don't have to walk a mile from the entrance to get to the rides.
This map gives a good general idea. Citywalk is the connecting part between the two parks/the three hotels. The parking garage is attached to Citywalk. When you first enter CW, you'll know. From there, you can go to any of the shops/restaurants. And the parks are on the way.