We made it to Honk Kong Disney on the MTR and it was easy, quick and pretty convenient. We purchased our tickets onsite and used the online 10% discount for foreign travelers just by showing the web page and our drivers licenses. Much easier than buying online. I downloaded the app and it was great as a map and to track wait times for the rides. Most rides had 5 to 40 min waits. I recommend getting the fast pass for Dumbo as it was the only line that took MUCH longer than the advertised wait time. We were able to get on all the rides and still make it back on the MTR at a decent time but the train was pretty packed. Overall a very manageable and enjoyable Disney experience in a day.