I was out in the OR Bivy 3 weeks ago just south of Hidden Pond along the FT. I didn't find any fleas nor ticks, but after dark I had some Mossies whining around my ears while I was laying in the sack. My OR sack has a built-in mesh, so that protected me from bites. The whine is a little obnoxious, so have something to cover your ears -- if it's gonna be anything like it was for me.

Got to wake up and watch the moon & clouds, and got to see a shooting star.

I'd say, though, there was lots of moisture in the air so take something to lay over your bag -- don't cowboy up without dew protection over your bag/sleeping area.