Hi krisdance - you're going to be just fine!
I've had 8 endos done over the years, and haven't remembered a thing. I have a very hyperactive gag reflex so I'm sedated quite a lot, and they spray a lot of the lidocaine on my throat as well (it tastes awful, but just swallow as quick as you can and you won't even feel the next swallow). I talk to the doctor a little bit as they're injecting me, then suddenly I feel all floaty, and then I wake up in the recovery area and I'm ready to go home.
Your doctor sounds very caring about your anxiety level, and I'm sure he'll will take good care of you. Keep us posted. The worry before hand is worse than the procedure.
Take care,
Katie G