Things to do in Niagara Falls?

Whirlpool jets. Did it with my kids, awesome! Went a couple years ago, LOTS of walking! Parking is difficult and pricey
Whirlpool Jet Boat Tours
Long lineups for stuff too.
Ferris wheel for at night is awesome.
Under the falls on Canuck side was great.
We watched fireworks from the tower, 8 cant remember the name.
Bring lots of $$$
Your last line is exactly what we are trying to avoid. Lol