Thanks to the rental car agent who helped us, we found out that Wailua Falls, a beautiful twin waterfall, was easily accessible and close to our hotel. Sure enough, after a short drive we came to the waterfall, only yards away from a nearby parking lot. So easy.
Here is my attempt at being artistic by trying to get the waterfall to look smooth and blurry. I propped the camera on a stone wall and set it to 1/8 at f22.
Here is a similar shot at 1/320, f9.
That's what makes photography so cool . . . and so challenging . . .