You're probably safe, but if you're nervous about your investment, I'd ask to see the pool's water test logsheet (it's a mandatory document for all commercial pools). The standard level for free chlorine in commercial pools is 1-3 ppm; that low level won't harm anything if, as the previous posters suggested, you pre-rinse and post-rinse your gear in unchlorinated water.
If the free chlorine is high--say 5 ppm--then I would be moderately hesitant to swish my new gear around in the pool, but I'd not worry too much; you're only going to be in the chlorine for a relatively short time, and pre- and post-rinsing will take care of the problem.
If the free chlorine is over 7 ppm, then I'd not even dip a toe.