This really is the same fun that's been had over the centuries. You eat freshly barbecued food next with a view over the water, followed by some playing in the water itself.
Sure the jetskis would have been rowing boats, but the charcoal grilled chicken is centuries old. The fun here hasn't changed much over the centuries.
This is a good place to eat if you've done the waterfall and the henge. There's also a boat trip and other water toys to play with you're not splish-splashed out by the waterfall!