We did Disney transportation in 2016. The only pain was that you had to have your bags ready go to by 8 am (other than any carry on that you wanted to take on board yourself). We just waited in the lobby of AOA until the bus came to take us at around 12:15. We got there at around 1:30ish or so (stopped at one or two other resorts). We walked right on the ship, which was awesome, but the only thing was that we missed the good buffets (and it's really all about the food! LOL!) We were debating doing private transport this year so we could get there earlier, but I think we may stick with the Disney transport. If something is delayed, it's on Disney, ya know?