retrolental_morose 4 points 1y ago
A guide dog may not be forbidden on a beach, but nor may it be overly helpful. Traction on sand is difficult for some dogs and you might want to consider the dog's comfort in the heat, its usefulness while you're just relaxing on the sand etc.
As to using your other hand, go for it. I carried my daughter around in a sling with a dog, then held her hand as she got older. One of the benefits to a dog I found was being able to mentally switch-off for large parts of familiar routes, which I struggle to do as easily with a cane.