I think it would be very hard to open the sunroom for play at a party.
You can't count on people to obey the rules and someone could turn on the lights and that's all it would take for the neighbors to pull out their binoculars. Your neighbors will know a party is going on - with all the cars in your drive and in the street - and neighbors are nosey, I'm am.
You'd be worried that someone would turn on the lights in the sunroom or the house and light the sunroom up enough to reveal a naked body or two, and that would interfere with you being a relaxed hostess...and it would get the neighbor's talking.
I would plan a party that offered you the optimum way to start out comfortable and with privacy in mind.
Use the sunroom at another time, when you have one or two couples over to play privately, and you ALL will know how important keeping it dark is. You'll be able to control a smaller play situation much better and enjoy your sunroom, too.
LM
P.S. I like the idea of using the sunroom when the moon is full.
