I was there Saturday. I was planning to hop in line at the last minute, like you said. However, we had nothing else left to do by 9:30 so we checked the wait. Sign said 210 mins but I was skeptical as I couldn't even see where the line ended. I thought to myself that they may have inflated it artificially to deter more people from entering since official park close was 10pm and EMH 10-12. Based on that we hopped in line. Several times they announced that some of the bays weren't working and the wait may be longer. I knew with the FP return line finishing up around 10 or shortly after the standby would start moving. We stuck it out. Ended up done riding after 97 minutes. So that 97 mins was waiting in line, plus both preshow rooms, plus the ride. Obviously much less than 210. If we go again and don't have fp I will do the same thing again. Wait was posted 90 mins when we came out around 11pm. Not sure what the actual was at that point as we didn't ride again. When we were exiting the park I saw quite a few people just entering...I assume with the plan to hop into line for FoP...this was after 11:30.