The American side of the falls is much more spectacular than the Canadian side... and, ironically, can only be seen and appreciated from Canada. The Canadian casinos, Fallsview and Casino Niagara, are quite nice (the former has ambitions of European grandeur) and overall the Canadian side is much classier and safer than the American side. The views of the falls from the Canadian side are also much more accessible. If you choose to stay on the American side, Seneca Niagara is probably your best option. However, there are many, many motels in the area, and in September I am sure you can stay dirt cheap. Wherever you stay on the American side, I recommend that you take a taxi after dark if you need to get around.

If you are looking to play cards, you'll find that small stakes no-limit dominates all three of the cardrooms in the area. Seneca Niagara does spread limit on a regular basis, and on the weekend you probably won't have a problem finding a $5-10 limit holdem table, but nothing higher.

Like Bob, I'd recommend that you stay on the Canadian side. At present, a passport is not required for border crossings. That might be different in September.

I can't say much about eating. The American side has a Little Italy that probably has good restaurants. In Canada, I know that there are several sushi and Japanese restaurants that are quite good as they cater mostly to Japanese tourists. There is also a restaurant that I believe is called "Table Rock," located right beside the gorge, and run by the Ontario public parks agency. They are currently closed but should be open by the time you get there. I don't think the food is world class but the view is terrific, and it is very nice to eat or have drinks while enjoying the view.

You're welcome to email me if you need specific info. I'll try my best to help out.