Our entire family loved Mermaid Beach Putt Putt! The Waterways course was fantastic. We played on a really hot day, and you just felt cooler being next to the water.
Loved the flamingos and other animals dotted around the course, and the spinning wheels add a bit of fun to the game.

Also played the Fun Run course which was good fun, but sadly for us none of the motorised features were working, which did take away a little of the fun. In fairness, we were told about this before we paid, but the kids were not to be swayed.

I'm going to go out on a limb here and say the Waterways course is the best that I've ever played; and I've played dozens of courses over the years with 3 kids!