Many of my 50s memories centre round the beach, as we lived near the sea and spent all our hols at my gran's near Exmouth.
I remember the donkey rides and the roundabout on the beach. And also the chidren's activities that were sponsored by the comics Robin/Swift/Eagle/Girl. They each roped off sections of beach and had games and songs and sandcastle competitions. I imagine such activities would now be difficult to arrange because of all the safeguarding procedures and parental permissions etc. But back then, Mum and Dad were more than happy to shovel us into the enclosure and stroll off to read and sunbathe.
And I remember Lobby Ludd - the News Chronicle promised ?£50 if you spotted this character wandering the prom - you had to go up to him and say "You are Lobby Lud and I claim my £50." Presumably you had to buy the News Chronicle in order to know what Lobby Ludd looked like. We never did win £50, but my Dad was always on the lookout.