Well, I was born there.
The "attractions" come and go. Depends on what you want. There may be a power plant tour. There's the Maid of the Mist, if you want to see the Falls from the bottom, and walkways behind them. You can just stand there right beside where the water goes over. There are usually spotlights on the water at night.
Downstream, there is a spot where the river makes a right turn by turning 270 degrees to the left (called the whirlpool) and there is a cable car that goes out over it.
My father said that while the Americans own the more spectacular bits, the better view is from Canada.
You don't need to bring alcohol; we sell it here. You may have a bigger problem taking food back home. (At least, American customs ask us a lot more than Canadian.)
Use Canadian money. If you can't get it from your bank at home, Canadian banks will trade at a fair rate. Stores are not as generous. Or use a credit card.
David and Dayle