Being a WDW vet, I can tell you it is going to really slow things down, especially when it is new. We were there when Magic Bands were in the testing phase and have been back every year since. At first, there were huge lines to get to the FP machine because the guests did not know what they were doing; CMs were learning; guests weren't holding their arms right or lining things up; scanning was slower etc. One time, we actually waited 20 minutes in the line at a ride to get to the FP scanners. It is much better now that it has been in effect a few years and in most cases goes quickly, but still slower than the old days, and there can be delays if someone is having scanning issues and doesn't know what they are doing. That is all when people have the band on their wrist. Here, it is not going to be on the wrist and easily accessible unless magic bands are next. At DL, especially at first, you are going to have the issues of people trying to hand the paper tickets, being told no, having to dig out their park tickets etc. Even once people figure out they need their park ticket, then you have people pulling them in and out, trying to get them to scan right etc. At WDW, they do not have your photo on file, but your name pops up on the screen when they scan-- they never check names--I can see at DL if the machines have the capability that photos would pop up. It used to seem creepy at WDW when we would scan for our FP and they would sometimes greet us by name, but we got used to it. I think at least at first while the learning curve is happening, it is going to be very slow.