Dominicans do not want to get too much sun and then look as dark as Haitians...Go to the sea, swimming using hat, glasses, t- shirts ...
Dominicans are very intelligent and hate sea urchins spines...and sometimes even shoes
They had them in England too, they were called "bathing machines".My grandmother used to tell me that back in her times everybody would swim fully clothed.
At her home town they used these booths at the end of a boardwalk to change into swimming clothes and jump straight into the sea. When I was little we rented the booths a couple of times, out of nostalgia, but they were already pretty run down and useless (this was the 80's).
Now some of them have been renovated and given new uses:
Playa de la Concha