yes, it's around 4 but they are flexible during the week and off season;you can check in and they will text you when the room is ready, sometimes before 4
It is 4 pm but you can check in early and they will contact you when room is ready if it is not on arrival. They have restrooms for changing so you can enjoy their pool or go to. Beach. They will give you a parking pass to put your car. They will text you when room is ready or youcan check back. But the faster I was on the beach the better!
Best bet is to call and ask. It I believe it's 3pm
Get an answer from Atlantic Sands Hotel & Conference Center staff and past guests.