Disneyland's HalloweenTime promotion has been so successful that park management is calculating what other holidays they can tie into for a quick attendance boost.

Decorations and more now mark Halloween, Thanksgiving, Christmas, Easter and Summertime. So the next big promotion? According to one source, "TDA (Team Disney Anaheim) managers are planning it to be Valentine’s Day. Expect to see hearts, lace, princesses, and all that fluff all over the resort next year. And it will be...