Not difficult, quite obviouswhat to do when you get into it. The only thing may be a bit of head scratching where the wizzy bird hoses met the wizzy bird shooters. just don't break any fragile plastic clips.
"Wizzy Bird": a pressurized bird which wizzes a glycol based liquid on your windshield.
Oh, and have someone handy to help with final removal. Kinda awkward.
Dave M