The girls will retreat to the cabanas. This is your chance to build rapport without competition.
For those playing the Sarah-specific route, increase your stats early by applying for jobs (modeling, escort, or stripping). These paths offer the fastest way to boost "sarah points," which are required to unlock intimate pool interactions like the "Kiss" (Sarah > 1) or "Proposition" (Sarah > 2) options. Hidden Scenes: Virtual Date Girls Pool Party Walkthrough UPD