The whole concept of Passbook and Apple Pay is just far more convenient and intuitive on the watch than on the phone. It has felt cool, but somewhat gimmicky for me in the past to use those services on my iPhone, since once I pull out my phone I really could just as easily have grabbed my wallet. On the watch it really makes sense and is super easy. I just went on my first short trip since owning the watch. I used the watch for the entire flying process; security and gate. It worked perfectly and easily. I also have my AAA card in Passbook on my watch for those times when hotels ask to see it for the AAA rate. Apple Pay is far more useful on a watch device as it seems to work better, you can feel the feedback, and you aren't fumbling for another device. I continue to find many shops and stores where it works, but it's far from everywhere. I do think one of my favorite applications for Apple Pay is vending machines. Grabbing waters without thinking about change or anything is pretty cool. OK, nothing new here, but I really do believe that travel is one of the killer apps. Travel and exercise. I am enjoying the Watch more and more.