I don't recall seeing cabanas near Runamukka Reef... but there are many chairs in that area. My daughter is 54" and she was not allowed on the slide in that section. Didn't see anyone wearing a vest on the ohyah/ohno slide when we were there last week. The sign does say the slide is for "strong swimmers". Some slides asked you to remove your shoes. There are racks/baskets near by the entrance. Just put your shoes there and go have fun. Shoes are highly recommended though. Flipflop, crocs, or watershoes.. The rough sands on the walkway hurt my feet. Buses start running 1 hour prior to the start or early entry. If you stay at HRH, the bus loops around Portofino Bay-->HRH---> Volcano Bay.