The plan that I saw released on here before the show, which was the same plan that I saw at the show, definitely had a level 3 as I used it to plan out exactly where I needed to be and when before I went. I didn't have any issues finding the stairs and lifts, just getting down them after the Aliens talk on Saturday which took 20mins! They fixed this on Sunday.
Ah, maybe I just printed it off super early then! Lucky we ran into that staff member regardless =)