I went with a group of friends for the passholders preview mid-November and lunch was amazing. I'm a slightly picky eater so I preferred the lunch menu to what I read on the dinner menu. It also seemed like lunch had more items, or just a greater variety of choices.
Also, take into account the way lunch is served; you order, find a place to sit, and they bring you your food on a rolling cart. It's very similar to a normal sit down restaurant, except you order first and sit yourself. You get the feel of a traditional sit down experience (for the most part - you don't have to dodge people while carrying a tray of food) without spending as much.