We were there for the Saturday of Memorial Day weekend. At 12:30, husband got a FastPass for Rock N Roller Coaster for 3:30-4:30. At 3:15, we both got FastPasses for Twilight Zone for 4:05-5:05. I didn't check the Rock N Roller Coaster FastPass situation after the husband rode it at 3:30. And remember, it was during Star Wars Weekend as well.