We took the kids, one June weekend back in 2009, to Niagara Falls. I had never been there before. I was so impressed. The Falls literally took my breath away. They are incredible!!!
The kids loved them too and especially loved all of the activities that center around the Falls. There is a ton to do, on both, the New York and the Canada sides. It is a great mini getaway with kids.
I just want to note that based on the low price of the room, economically, we would have been better off just paying for the room instead of using 30,000 Starpoints. However, for my family at that time, it was the only way we were going to take the trip. So for us it was worth it as it was a great 3 days and even if not worth the points in dollars, it was worth the points in experiences and memories!