A long and lethargic look at a holiday island off Greece which seems to be almost entirely populated by American teenagers. One such pair, Daryl Hannah and Peter Gallagher (were they ever this young? ), soon shed their clothes along with the rest of the beach-baskers. Add French nymphette Valerie Quennessen ('I came here to simplify my life,' she pouts) to the equation and the movie soon settles down into a straightforward sexploitation piece that could have been called Three on a Waterbed. There are a few tart lines for Barbara Rush (effortlessly stealing all her scenes) and Carole Cook, who complains lustily: 'Aren't they ever gonna finish Greece? '(DQ)