Thanks! I'd call it pretty vanilla. There is light femdom ("lezdom") on some paths - but it's dynamic focused and there's no bdsm/pain or anything. The main topic on f95zone has these "genre" tags:
Ren'Py, 3DCG, Animated, Female Protagonist, Lesbian, Oral Sex, Vaginal Sex, Anal Sex, Toys, Group Sex, Masturbation, Voyeurism, Exhibitionism
There is no watersports, nor any plan for there to be such a thing (or similar) in the future. Feel free to reach out with any other questions!