We will be going to the water parks for the first time since learning my son has an anaphylactic bee sting allergy. I see that I can buy waterproof, waist-pack style Epi-pen holders, but will we be able to ride the slides with these? If not, I'm very nervous to have him waiting in those long lines without his Epi close by. Even if one of us doesn't go on the ride and waits at the exit, it is still a long way/time from the entrance to the exit of the ride. And this would also eliminate any chance of being able to ride anything as a whole family (thinking of the family raft ride) or of my being able to go on any rides with my sons if my husband goes to the little kid sections with my daughter. Anyone have experience with this situation that can give me some suggestions?