Private club attached to the Wilson Point Men's club. You must know 3 members to get in. If you do, it costs my wife and I $350 a year (first year was $425 due to initiation fee).
It is so worth it! It is not just a pool, it is a huge picnic area with lights, a beach, a pavillion where they have concerts periodically, horseshoes, ping pong, clubhouse with food and drinks (alcohol too), etc.
They have those beach wheelbarrows available for you to borrow, is mostly first come first serve for spots, both at the pool and in the table area.
There are maintained BBQ pits all around and a shovel and trashcan for you coals when you finish.
Great views of the inlet and boats and colorful strings of lights in the trees make it nice.
A large menu in the club house if you get hungry and didn't bring your own grilling supplies.
Only major complaints are space around the pool. You have to get there early to claim a nice sun filled chair. They also have an area that gets shaded halfway through the day, needs trimmed or cut back. They also have 4 pages of rules and they are posted everywhere. Nothing extreme, just annoying.