Park hours are shorter, less shows (ie

ne showing a night of Fantasmic and maybe only once a week instead of every night), and to dispel a common myth, the characters do not really "walk around". My DS's friend was very disappointed when she was at WDW and Mickey wasn't just walking around like in the commercials. There are set times to meet the characters at set places. Just an FYI so you're not disappointed like she was

. Also, some things (like Carousel of Progress) may not be open, and also some restaurants may not be open (like Pirate Y el Perico).