We walked on lead for most of the time, but there was plenty of opportunity, also, to walk off lead

explore the water with other dogs (no, that's not Penny!)

mooch around

and sniff.

However...
The next day she was in pain, not even putting her rear left leg to the ground! That's the one that had a cruciate operation last September.
I think the big problem is that, since her operation, training has gone out the window and she now pulls on the lead when walking with a group of dogs. The pulling puts strain on her hind legs.
Yesterday she rested, and we applied ice-packs to the knee intermittently throughout the day. Today she is walking on four legs, so it was back to slow ten-minute walks around the streets, but I'm not sure about her level of pain, so it's off to the vet first thing tomorrow morning.