Normally the dress code is the less the better. Since you’re a guy I would def suggest wearing a sock.. just one. Also I would clean up before and after, everyhwere I go they ask that you wipe it down after but just to be sure I do it before because who knows who was there before you. It also depends on in you’re going in a stand up or a bed, I go in a stand up and usually stand on top of my shoes because the floor is also an uncertain place. (idk about beds, maybe someone else can help you out there) Other than that, happy tanning!