Lego Disney Up House - Doubled

As an adult, when I restarted collecting LEGOs, I was dismayed that some of the buildings were not complete--they did not have "backs." It took me a little while to remember that LEGOs are considered toys (to some people) and toys are meant to be played with--opened backs allow little kids to play with some buildings as though they are doll houses. This just means AFOLs need to get creative to add more. (Or LEGO is pushing adults to buy two of some sets...)