Not sure quite what you’re looking for in the way of dining. In the tourist area, pretty much all you’re going to find is fast food. If you don’t want to leave Niagara Falls proper, you can head for one of the hotels in the area and try a restaurant there. Or you can find one of the national chain restaurants in Niagara Falls – like Kelsey’s, Montana’s, The Keg, or Perkins. But I’ll second the suggestion of heading to a winery in Niagara-on-the-Lake that has a restaurant. The Strewn winery has a decent restaurant in it (www.strewnwinery.com if you’d like to see the menu). Niagara-on-the-Lake is about a 10-15 minute drive, but it’s scenic. Even if you have lunch somewhere else, you probably would want to visit Niagara-on-the-Lake just for a quick look.

A passport isn’t required. If you have one, bring it. If not, just make sure everyone has their birth certificate + government issued photo ID. You may or may not be asked to show ID when crossing the border.