Can you identify these people or the event?

The first person to answer says, it is at May's Willow Point, Knootz Lake, near the old Anderson Hotel.
L-R Vivian Ruff, Gloria Pogodinski(standing in back or this might be Betty Jean Robbins), Jane Kline
and Judy Braner seated and Elaine May standing at the right.

The next person to identify this photo says they are:
L-R Mary Lou Brandich,(I do not know who the gal is standing in the back)
Mary Jane Kline, Judy Braner, Elaine May.