No special access issues
Agua dulce bouldering it's located in playa de agua dulce for this reason that name. Playa de agua dulce it's visit by a lot of surfers and people with campers, becuse it's beautiful, quiet and rock pools. So you can have a swim, climb or both. When the tide it's high, some of the boulders can get wet, but mostly always some of them stay safe from water.
About the history of climbing here, i don't know but for sure someone realized about the possibility to do bouldering here. So let's do it, not any restrictions.