Sorry Trish meant to come back to this earlier. I find it so easy to put on, especially after watching the DVD. Like Mel said you only need to tie it up if you untie it, but even then it is super easy to do.
I had DD in it tonight while we went out for dinner and she slept the whole time. I had a HAB with DS and loved it except I always felt like I had to tighten it after a while, with the CC you simply pull the straps and it tightens. I am hoping to try it in the newborn postion and try a BF in it too. I used to put my HAB on before getting in the car and driving but the CC is so easy and quick to put on that I havent bothered yet.