Just took off from a 5 night trip, still hanging in Riggins. YJs were definitely a pain in the ass, but no deal killer by any means. They got progressively worse from Corn Creek to Alder, Blackadar, and were at their peak at Big Mallard. Hainey was just your normal to be expected amount as was Upper Bull. The Carey Creek ramp was as bad as Corn Creek.
We had a really big group with lots of kids, but not a whole lot of stings (or bites). We also used a barrel for trash and a sand mat in the kitchen and hung traps a ways away. Most bites came from accidental contact with them; they are aggressively after food but could really care less about the humans carrying it around.
It was good to be forewarned and thus prepared for dealing with it. Would go again tomorrow if I could.
Show me your OOOOOO face