I'm not sure. I didn't see any cabins but I'd say to contact the part directly. They have a website and it'll probably have a bunch of information

If you have a passport you can go from Canada to the park on the US side.

They are all connected as a trail. If you start at Whirlpool State Park, you can go either way...toward the falls or Devil's Hole. If you want to walk down Devil's Hole leave a minimum of three hours for experienced hikers and a lot more for novice. Also look at the new Niagara Gorge Discovery area (1 to 1.5 miles from the Whirlpool State Park) toward the falls. You can take an elevator down to the river below the falls (where the Maid of the Mist puts into the river each year) and go on rough trails. Awesome hiking and spectacular views!!!

The gorge hike is not wheelchair accessable, but there are plenty of paths and park area at the top of the gorge with beautiful scenery that are very much so accseesable along with public restrooms that are accessable. The bathrooms at devils hole on the other hand further down the gorge if i recall are not accessable