If you were a Disney cast member in 1976 and got the opportunity to play a character in one of the theme parks, this video helped you learn the rules. Thanks to Everything is Terrible, we get a glimpse into the not-so-glamorous world of catering to children the Disney way. -via Metafilter
If you want to know what it's really like to be a costumed character at a Disney park, you can read the experiences of people who've done it.
Crystal Nettles played head characters such as Pluto and Eeyore.
Redditor doublenn played Snow White and did an AMA. The highlights are here.
Brandon Pinto portrayed Captain Jack Sparrow.
Robert Niles played several different characters on Disney rides.
Redditor JustPlanning played Chip and Dale and did an AMA. Other former characters joined in with their experiences.