Naw I don't doubt this dudes story but yeah in my experience of the 24 hr fitnesses ive been to they don't give a shit what you do. Their job is work the front desk and rerack people's weights.
exactly, maybe in a Super Sport they might care, but otherwise no. I routinely use duct tape, chalk, carry my gym bag, film heavy sets and I've never had anyone complain.. even the managers walk by and don't care.