Chiming in with another outsiders perspective:
I only get to visit the parks every two years or so. Last time I visited was literally days before the SDMT opened up. When walking around the MK, they were running the train, I could even see cast members (I assume) on it doing testing/CM soft opening of some sort. But my whole time there they never opened it up for everyone, either for previews or soft opening. Was I disappointed? Yeah, I would have liked to ride it. That said, I knew I was coming back within a few years so I didn't let it eat away the magic of that trip. It was awesome! I got to be an extra on Indiana Jones, I got to ride Star Tours a zillion times in a row with no line, I got to relax on the porch near Aunt Polly's during a light rain storm in a rocking chair watching the poor tourists across the way getting wet with no raincoats. Point is, I knew the attraction wasn't going anywhere and would probably still be there on my next visit.
Sometimes we get so wrapped up in everything (not helped by Disney's insistence on planning) that we don't see the forest for the trees. I really hope that ROL will be be open in May when I visit the same way I hope the new Frozen attraction will be up and running. But if it doesn't happen, they'll all still be there waiting next time I stop by.