If you have a Disney Visa (or can get one before your trip), there is a character meet and greet in Epcot that is just for Disney Visa cardholders. They will take your picture, give you a coupon for a free 5x7 print of the picture, and put it on your photopass. The character meet and greet is held in a room that only one family is in at a time, so you get some privacy with the characters. When we went over Christmas, it wasn't terribly busy and we had time to goof off with some of the characters. Characters alternate, but Mickey is one of the ones who rotates through (he comes about every 1/2 hour or so). There are usually multiple characters there at a time, so you can get pics of your family with more than one character in the picture (which can be tough otherwise).