To promote Valley of the Dolls, members of the cast and crew boarded the SS Princess Italia together for its maiden voyage. Starting in Venice and ending in California, the twenty-thousand-mile journey lasted about twenty-eight days, with stops in Miami and Mexico. Mark Robson, Jacqueline Susann, Travilla, Barbara Parkins, Tony Scotti, Patty Duke, Sharon Tate, Susan Hayward, and Paul Burke were all onboard.