While I do think it's completely nutty to just chat away while in the lazy river, it could be that it was his teen children checking in from a park or something. Or, maybe a spouse needed to reach them. While I don't believe that anyone should ever use one while driving (pulling over & parking is almost always an option), as long as they aren't talking and guffawing their way through a movie, show, speach, disney attraction

, there are simply times people want/need to connect with someone.
Our DS has had a cell phone since he was 8. He was monitored and had limited service (plus it was only $10/month), but in the event of a problem, he had a way to call for help. Once he and a friend were playing in the friends back yard (heavily wooded). The friend decided to climb a tree and fell and broke his leg. He was crying and yelling and didn't want my DS to leave him. DS was able to call the boys parents who came out to check on him (not thinking the leg was really broken), and didn't bring their phone with them. He then called 911 for them.
Plus, he's been able to use the bathroom (depending on the location) on his own and know he could call or be called if he was in there too long for safety. It's not a substitute for parenting and watching your kids, but it does give peace of mind to a point.
Or, this guy could just have a huge sense of self and feel overly important
