The anti fog should serve you well.. you get 2 with each unit I believe.. might be worth taking a few more if your there for a long time.. only clean them with water though,and light cloth ..
Im getting to grips with the EYE.. can get the camera menu to come up but better to use all the EYE frame lines etc as they wont burn in,like the camera ones will.. Im used to having a few things in the VF.. ISO,shutter,zoom position, and how much left on the cards in the VF just for security sake.. but will learn to live without them .. actually quite nice to have a totally free frame.. I just have the 16-9 box and cross hairs.. can toggle in the WF/Hist .. but generally I never have all that stuff going as I shoot.. too distracting ..
Just remember to unplug it.. no on/off switch.. but has sleep mode ..if you forget over lunch not a problem.. but over night could be..but who is leaving the battery on the camera over night anyway..
What camera are you using.. sounds exciting shoot! ..