We were talking about how the trains were going to load while we were there a couple of weeks ago. Inverted trrains with 4 across seating do not lend themselves to omnimover style loading.
....Unless, the seats rotate 90' to face the platform, and a convayor belt under them matches the train speed. I believe Harry Potter and the Forbiden Journey uses a similar loading system? (Not been on it myself).
I assume there will be a seperate offload platform as well.