How much walking is needed in order to be able to see the Falls?

Not a lot of walking is necessary. The falls are very accessable. It's definitely worth it.

Be aware there are stairs to get to the falls

You can park right near the falls. Walk 20 feet and get some great shots. Take a hike 5 minute walk if you like up a hill and another beautiful view point.

It's a short walk from parking area to the falls.