The Rosebud Beach Hotel (1984)

One scene in the film shows 3 various women topless. One pulls her panties off too, so we see her butt. It lasts less than a minute.

Another scene shows 5 nude women at attention. We see breasts and butt. Soon after wee see them frolicking with men for a few seconds.

A man and woman in a hotel room, the woman is wearing a see-through top. She's trying to seduce the man.