I think there may be some confusion here.
Can you meet a character in your room? Sorry, no. (I'd request Captain Jack Sparrow so fast...whooo! *fans self*)
BUT! Through Disney Floral & Gift, you can order an in room celebration, where when you come back you find out either Mickey, Minnie, Tink, The Fairy Godmother, or Captain Jack has been there and left treats, depending on the celebration you order.
I hope that clarifies what you might have heard.