Just got back today from a extremely uncrowded day at SFDK! I was surprised at the lack of crowds! And EVERY ride (except Voodu - which doesn't count because it's so boring - needs a new software update) was open! Even both water rides! Monsoon Falls got stuck on the lift hill early afternoon and remained there the entire day. Riders had to be helped off.
Of course, Roar only had one train, which is normal, but it was SMOOTH! Almost like silk! 100% smoother than it was when I rode it in December! Like previously posted, Boomerang had no gum ads, and the M&M Steps were gone too by the old entrance to Roar. We walked up the stairs and immediately noticed all the M&M ads were gone! You know you go to Six Flags too much when you notice empty stairs!
There were a few workers working on Superman, but mostly I either saw them sitting around or nobody there at all.
And the water at the Sea Lion stadium was super green and slimy looking.
All in all, a great visit though!