Photo Equipment: If you decide to go on the "Maid of the Mist" or the "Journey Behind the Falls", I would bring a disposable waterproof camera. Your camera WILL get wet!
I brought my video camera and had put it in a custom camera bag which kept the camera dry. I got some great shots of the falls. There was a lot of spray so I had to clear the lense area a lot!
Hands Free Vacation
Luggage and bags: Be sure to bring a backpack with you. You will probably want to take many photos, and some of the attractions involve water, so you don't want to be holding things that will get wet.
Clothing/Shoes/Weather Gear: Running shoes are a must! I wore sandals one year, my feet were hurting so bad!
Good walking shoes...
Clothing/Shoes/Weather Gear: We did a lot of walking around Niagara. There are buses you can take but we wanted to enjoy the walk along the falls.
Spray off the river.
Clothing/Shoes/Weather Gear: Obviously vast quantities of water pass over Niagara Falls & if the wind is blowing your way, the spray will soak you like heavy drizzle.