I haven't followed MMRR, but looking at the new concept art, it seems like it's going to flow like the great movie ride (and Kong) and be screens based like Kong. Could be interesting.
More like Mystic Manor than Kong. Projections will be on physical objects that they themselves may change in shape. Your vehicle is an LPS that is initially riding behind one another like with a train or tram, but when hijinks ensue, they'll all break apart and go their own ways.