Apollo Beach "official" clothing optional location

I'm planning on participating in nudism for the first time next spring. I'll be in the New Smyrna Beach area and will go to Apollo Beach. If I understand right, you go to lot 5 and it's anywhere to the right of parking lot 5. Is that correct? I understand lot 5 can get full quickly, but I plan on going very early (probably shortly after the park opens) and on a weekday. If I happened to get there later, is it ok to setup nude between lots 4 and 5 along that stretch of beach? I just don't want to get in any trouble. I've seen some say it's ok to setup between 4 and 5, but it's not "officially" official unlike south of lot 5.