It's right outside of the Imagination Pavilion. Back in November, it was Mickey and Goofy and there was ZERO line. We walked right in. We had a totally different experience from what it sounds like BrookieM had. It's so much better than the regular meet and greets because it's just you(your party), Mickey and Goofy(I guess the characters can change)and a photopass photographer in a decent sized room for a few minutes. Mickey and Goofy took turns dancing with my DW and DD7 and there were hugs and high fives to be had. I had a Donald shirt on so Goofy "wasn't real happy" that I didn't have a Goofy shirt on. It was so much fun that I tell people they should get the card just for that and then if they don't want to use it, just cancel it afterwards.
The one in HS is really good too if you're a Star Wars fan. It's the same deal, small room with just your party, a photopass photographer and Kylo Ren. My DD7 and friends' DD7 were quite scared because he sounds just like he does in the movie and they were a little freaked out. Afterwards, they wanted to go back in.