Sorry to hear about the knee.
I had a partial tear in '83 playing football in high school, two scopes and a lot of meniscus. Then in '85 I blew it out completely and had the ACL reconstruction, using the then fairly new, less invasive patellar graft procedure. I had a buddy who had one a couple years before that and he had a track from below the knee half way up the thigh and was in a cast for 6 weeks. With the "new" method, if it does go that way for you, they really work at ROM, fast...I mean right after surgery, as one poster said, you're in the passive motion machine. I can't add a lot more than the good stuff others have offered, but PT is the key. It sucks (and I sucked at it), but in the end, following instructions from the medical and PT people and being vigilant with PT is the surest way to a quick recovery.
If swimming and biking are your things, you're in luck, because these are the first activities you can get back into, no pounding or lateral movement. You'll start on a stationary bike to protect the leg, but that motion is what they used for me to start getting back in shape and increasing strength and ROM. I never learned to ski before injuring my knee and then was too fearful to learn for the next 25 years. When I went back to my ortho this year to see what I needed to do to start, his belief was that braces are primarily a psychological aid the most important factor was muscle tone and strength in the bad leg.
I am wondering if you had your meniscus trimmed in the ACL reconstructed on the same knee ? The big issue that noone seems to talk about is oesteoarthritis after about 10 years from injury specialloy if you have had meniscus dammage.