Roll out the pink and blue icings and cut out bikini shapes for 3 of the gingerbread people and shorts for the other 3. Stick in place with a little of the writing icing. Pipe on faces and hair with the writing icing tubes.
With the ready-to-roll icing trimmings, re-roll and cut out beach towels, flip flops, beach balls, books, etc.
Spread the demerara sugar out on a board to make the sand, then arrange the gingerbread people with their towels and accessories and the cocktail umbrellas to make a beach party.