We did it on our last trip. In my opinion, it wasn't remotely worth it. We got a lot of photos -- but no more "good" ones than we typically get by taking our own. Also, MemoryMaker doesn't include stock photos or other extras (I just download my own stock photos online if I want them for the souvenir photo book I make on Shutterfly when we return, anyway). If you have a half-decent camera of your own and don't mind asking CMs or Photopass photogs to take your picture with it (they will happily oblige, always, at every location), and if you aren't hugely interested in on-ride photos (ours were fun for the novelty, but none of them were very clear and some didn't "come out" at all), MemoryMaker is unnecessary.