I don't think my body has ever been beach ready. In my teens I was a skinny boyish figure, probably the 'right' shape in my twenties & thirties, then after 3 kids everything headed south and has stayed there. Do I care? No, never have. I am what I am and who I am. I don't care what other people think.
I have never enjoyed just sitting on a beach sunbathing, I'm bored after half an hour. I have to have something to do. And I can't swim so I have never bothered with swimming cozzies.
To me being beach ready means having sunscreen, sunglasses, a good book or magazine, camera, sketch pad & pens, cash for a cup of tea, and a bag to take our rubbish home in. I sometimes can't believe all the stuff people take to the beach with them - tents, tables, chairs, barbecues, windbreaks, dinghies and inflatables, umbrellas etc etc!!
Some years ago we watched a family walk up and down a beach trying to decide where to sit. There was plenty of room. They then spent ages erecting what I can only describe as a marquee, it was ginormous!! But what really amused us were the number of people that approached them asking if they were doing tea and sandwiches! But after a couple of hours the wind was picking up and the marquee was on the move, and the tide was coming in. They just managed to dismantle it in time.
We live just a few miles from some lovely beaches but rarely go there as there are no 'facilities' (rather necessary for me), and we can't take our dog in high season. Though TBH I much prefer a brisk walk along an empty beach in the cooler months or after a storm.