The brylcream look isn't exclusively a Disneyland thing, it's a Southern California thing. I noticed the local "kids" (anyone under 30 at my age) sporting the brylcream side-parted Mad Men look in SoCal about a year or 18 months ago. It spread quickly in 2012, and I've noticed lots of Disneyland male CM's doing that look now. It's the hip look, along with their slim pants and skinny ties. Suddenly, it's 1962 again.
This Radiator Springs Racers CM guy on the right is the epitome of
"Disneyland Cool" circa 2013. The CM on the left needs to go back to the drugstore for more Brylcream, but as the trend grows quickly in SoCal I'm sure he'll catch on. If he hasn't already.
Or this waiter at DCA's Carthay Circle Restaurant in 2013. He could time warp back to Disneyland circa 1962 and Walt Disney himself would say
"There's a clean cut young man, let's hire him for our little amusement park". Right away, Walt!
But I agree, the Anaheim CM's are really getting into their overall "look" more and more lately. The girls on Buena Vista Street with their elaborate rolled hairdo's, and the gals at Racers and in Cars Land with their rockabilly locks and the Racers male CM's with their brylcreamed perfect side-parted haircuts. It really sets them apart.
The brylcream side-part is seen all over SoCal now with hip youngsters, and I'm sure it will spread to the rest of the country quickly as a stylish look in the next few years. It may even reach New Jersey in a year or two, where it would eliminate the Jersey Shore gelled wind tunnel look once and for all. Or not.
The WDW CM's, bless their hearts, seem to go with the simplest and easiest haircuts and styles. I think it helps with the heat and humidity in Orlando. But a big part of that is that SoCal and Orange County, California is a style center that sets the trends for the nation. You just observed the youngster CM's in Anaheim sporting what are actually fashionable haircuts that also theme fantastically with their Disneyland or California Adventure environments.