They are surprisingly 'blase' about it...

"Hi, mind if we join you?" The youngest member of the party says after a split second of surprise.

"Um, sure?" You respond, sinking a bit lower in the water to hide your growing erection. The three women get in and start to relax, completely unabashed by everyone's nakedness, and the elf strikes up a conversation with you.

"So, what dimension are you from? I have never seen a live human before." The nut brown skinned woman with the ears that stretch out half a foot asks.