I think it's worth it too. We purchased it before our arrival, it took only 5 days to have it home (we live in France!). We were just two but we thought it would be easier to have a disney photograph to take pictures for us. For eleven days, we took 228 pictures with Disney's photo pass...
I always say Magic kingdom looks like our Disneyland park (Paris), much bigger, much better. For the rest of the world, you can't imagine how great it is, there's nothing like wdw in Europe, you have to go at least once in your life!