Hi all, Will be visiting WDW in a few weeks with my family (including 4 grandkids under 6). Was about to grudgingly (now that there's a cost for them) order MBs for everyone but now wondering about using MagicMobile at least for the adults. Just wondering what the experience has been for those that have tried using MagicMobile. Has it been convenient? Seamless? Can you use it as your room key? Said another way, is there anything you couldn't do with MagicMobile that had you thinking "sure wish I had my Magic Band"? Thanks for any advice and guidance you can provide.