It's amazing how such a small thing, a really insignificant thing, can be so huge. It probably took that manager maybe 5 or 10 minutes to get some water, or food, or whatever, and another 5 or 10 minutes to pass it out to people. Not a huge thing to add to his day.
But the good will he just engendered will be long lasting, I bet. The small things like this will end up making more of an impression than all the big sales bulletins and commercials.
To those of you that had someone bring you something like this, take some time when you are back home to write an email to AT&T, or apple, or whoever. Let their boss, or corporate, or whoever, know that you appreciated their little act of kindness. It will go a long way. And people DO pay attention to that sort of thing.
Just a thought...
Good luck on the wait.