We have theater on 15th St. on a Sunday and would like a place that we can have some lunch before the show. One of the kids is diabetic and the other is a picky eater. Both are very well behaved, but not really foodies. Any sugggestions would be greatly appreciated. My usual choices, Union Square Cafe, Yama, Olives, GT in that neighborhood are probably not the right ones with the kids. Help!