I did it, saw all the waterfalls, walked about 7 1/2 miles and I don’t know how much elevation gain. Ran into two Israeli couples who asked me to join them but they were taking a route with more elevation gain. There is even a boat ride on one of the lakes. Plitvice National Park is an unbelievable wonder of nature. It is a string of lakes with waterfalls between them and waterfalls on the cliffs above the lakes. See for yourself. The last picture is of the place I am staying at. I will try and post more pictures in another post. The site is having difficulty. Loading all the pictures.