The site says cabana rentals are available only in the Summer. So not until June? I wanted an 8 hour rental in May. I know the site says 4 hrs but can you extend the time?

POC opens on May 1st for the season. Attached is the link with information regarding Cabana Rentals and the contact information to make a reservation. https://www.paradiseoceanclub.com/cabana-rentals/

They are open in may

Contact them directly. Go to their website. That way they can give you their summer schedule.