Last year, about 600 residents took part in public drop-in sessions and feedback questionnaires on the proposals.
Queen’s Promenade gardens would see the installation of a new decked seating area, a water feature, play boulders and covered seating, while the beach huts and toilet block would be retained.
The council has previously said the spaces had been designed to “help mitigate” any future flooding, as work continues on sea defences on Douglas promenade.