Welcome to Canada!! If you're in the Niagara Falls KOA (on Lundy's Lane) make sure they don't put you in the back. There is a large retaining wall there but right behind is a freight train track that has trains running back and forth throughout the night. Many years ago we made the mistake of taking a site there when we were in tents with little kids.
In the RPod, you'll probably be fine but it's better to be aware.
Enjoy Niagara Falls... if you like cycling (even if you don't have bicycles with you, you can easily rent) there is a beautiful paved trail along the parkway all the way to Niagara on the Lake. Lots of scenery, wineries, fruit stands and restaurants along the way. We often go there in the summer just for a day of biking.