Spent the night near Opal Lake. There are currently multiple open water sites in Necklace valley, so no need to pack in water or fuel to melt it. There is one possible small campsite melted out at the entrance, near Jade Lake. I ended up camping on the snow-pack.
Snowshoes recommended, although on the way out I saw someone had followed my tracks in, wearing crampons. Tough dude, he sunk in 16" in many spots, and had post-holed up to his waist several times as well.
There is a hazardous traverse above the creek, and I needed to cut steps down to the Nesby footbridge, so an ice axe is helpful.
Continuous snowpack above about 3,000 feet, route finding skills were required. No bugs up there yet, although you'll encounter them in the Foss River Valley on the way in.