I'll be down there Friday evening, Sat evening, all day Sun and Monday. The fish are about 2 weeks into the spawn, should get some good bites this weekend.
The males are right on the bank with their nests, pretty much throw anything at them. The girls are a little bit trickier, there are a little bit deeper and tougher to see. Planning on getting locked in to some good 3's and 4's over the weekend.
As for the concert on Sat, I fish through that every year. Doesn't really affect me to much since I don't fish those pools closer to the hatch shell. But there are a lot people down there, and it is non stop people coming up to talk to you which gets really annoying. Holding a fishing pole is like holding a open mic.