I think I'm going with the train straight to the middle of the resort and the hotel is running a bus every half an hour from what I can tell so I'll get that back to the hotel. Going to push it back a few months now however. I'ts meant to be snowing next weekend and flights are about £200 cheaper going mid March. Ideally, we would go once Space Mountain opens back up.
Thanks everybody for all the tips!
This gave me a good laugh.