We had a really cool experience in the MK last year during our September trip, this was DH's and DD's first trip to Disney and both were wearing their buttons.
DH and DD (who had just turned 4) stopped for ice cream while I went to find a restroom. DH happened to find a coveted shaded spot in Adventure land so they could eat their ice cream and wait for me. Well, two bites into her ice cream DD drops hers on the ground (a big deal to a 4 year old) DH, who was not giving up the shady spot and getting back in line, gave her his ice cream, of course it wasn't her favorite but better than nothing.....a CM was watching and not only did he come right over to clean up the mess, with a smile I might add, he first went to the vending cart and got DD a replacement ice cream.
That might not sound like a big thing but it really impressed DH, the attitudes and atmosphere at Disney really contributed to us wanting to go back this year.