DS (24) and I rode it right after it opened (March 8, I think). Entered HS early so we'd be able to get a ROTR boarding group. I went straight to line for Runaway Railroad and DS was considering waiting for something else, because he didn't think ride sounded that great. He decided to wait with me. Line was long, but kept moving and we were in line when official park opened and everyone in line was also getting ROTR boarding groups so it was fun to see how everyone did (quite a wide variance in boarding groups considering we were all attempting it at same time). Once park opened, the line moved quickly for MMRR. I really enjoyed it and DS enjoyed it way more than he thought he would. I would have loved to ride it again because there's so much going on you really need to ride it several times (in my opinion), but no way was I waiting in the crazy opening week lines to ride it again! Hopefully we'll get to ride it again soon!