I doubt it.
You'll increase the odds if you can find a cheap rental car, but I think your best bet is to cancel.
Once my sister made it from plane landing to a park via ME in 50minutes, but she did not check-in. All the timing just happened to work perfectly. At the airport, there's a monorail from the gates to the main terminal. She did carry -on bags- add a good fifteen minutes if you need to pick up any checked luggage (of course you an also use ME luggage service). The ME bus timing was perfect. She was the last to board. If you are the first, you can easily wait half an hour for the bus to fill. Once I wated a good fifteen minutes just to get ON the ME bus, (usually it's faster) then another 30 for the bus to fill. The drive from the airport takes a solid 20mintes. She was the first stop...add a good twenty minutes if you are not the first stop. Getting a rental car is usually faster, but also variable. Sis dropped off her bags withthe bell hop/luggage services and hopped on a MK bus. Checking in could be done in about 15minutes, or it could take quite a bit longer, depends a bit on the line. Add quite a bit more time if you want to go to the room.
Then you could easily wait half an hour for MK bus to arrive, probably less, but the wait coudl eaily be half an hour. Mid day, I've often waited 30+ for a bus to arive. The ride form FQ is not very long, about ten minutes, but if you get on a bus that loops POR- add another 10-5minutes.
Then you need to walk from the bus stop to the gate, and into MK. It depends how quick you are at walking, which bus stop, bag check lines, and if you have new RFID or a paper ticket. Add another ten minutes min to walk to the castle, and whether you'd want to take a few pictures.
And all of this is assuming you don't have a flight delay. Last year, I had a short flight delay, about 15minutes. Which is did not nkow about until I was on the plane. I was suppose to land a little about 4:15pm. It was after 7pm when we pulled up to ASMo. Usually it's more like 90 minutes-2hours from gate to hotel. I remember distinctly because just before boarding the plane, I had considered a 7pm appointment at SSR. Normally I avoid arrival day reservations for that very reason, but I did not have time to get my nails done beofre th trip. the only opening at SSR was at 7pm. I thought, "my flight lands around 4pm. That's plenty of time to get to SSR." Boy, was I wrong. I hesitated, becuase they wanted me to prepay. I thought I'd call back once we arrived. Glad I waited!
What you can do, is keep your eyes peeled for a cancelation. Honestly, CRT is not biggie, and I'd really hate to be charged as no show for THAT one! I also would hate to stat my vacation in a rush. But that's me.
How about one of the other princess meals? 1900Park Fare or Akershus? I think those two are just as good.
Cancellations happen all the time... I'd keep checking a few times a day until your trip and you might be surprised.
