Gay nudist here for over 25 years. "What if I get hard?" is a common fear but a rare occurrence. I often tell new guys they'll be too nervous to get hard for the first 5 minutes and then they'll realize it's not a sexual situation. Erections pretty much don't happen unprovoked among adults.
There was that time that a youngster of 20 who was on Rx steroids came over and was hard half the evening. We all admired it and razzed him and enjoyed the scenery. We all have dicks, they (almost) all get hard, so it's no big deal.
heels and fish net stockling does it for me evry time
one of our nudist comes over in a blouse miniskirt fish net stocking and 5 inch heels, When she's naked she comes over grabs my dick and says i see someone is pleased tp see me and jerks my dick a couple of times