you will be fine, and you will be glad that you had the surgery... you will be able to do things pain free that you haven't done in years. now you will have the biggest 'ACL' on the entire group ride
i routinely treat 4-5 total knees daily, and the first week you will say... why did i do this... after 3-4 weeks you will start moving around like a 60-70 year old with a bum leg... 6-8 weeks you will feel good except for during your PT sessions or high level activities... and 3-6 months you will really start to feel good... a year later you will never believe you didn't do it earlier