Beach clubs - 2nd visit in April 25

Are there any beach clubs or seaside pools open for the public? We will be travelling with 3 kids from the UK and I am wondering if there is any beachside club or pool which is available ( for a fee). Last time I emailed to one of the club and they said even if I stay in the same area I need to be a member which was around $1200 per month and they didn't even bothered to reply when I asked them about a daily entrance fee. Obviously as we are travelling occasionally there that's doesn't worth it. For us this private membership thing is a bit overhyped. I am wondering what an American who visit 30a often thinks about this. Thanks