I don't know if it would work as well here because of the numbers of tourists, but in my parents' area there are several dog parks and the owner pays a nominal yearly fee, signs a waiver, and gets a tag to put on the dog's collar showing they are official.
It covers any maintenance costs and solves the liability issue because all users must have signed the waiver..............and anyone who hasn't is legally not allowed on the property (a sign is required to be posted and area must have gate and fence) and thus has no grounds to sue.
It covers any maintenance costs and solves the liability issue because all users must have signed the waiver..............and anyone who hasn't is legally not allowed on the property (a sign is required to be posted and area must have gate and fence) and thus has no grounds to sue.