My sister put off that surgery and suffered horribly for over 2 years trying everything under the sun. She finally broke down and had the surgery last month, and is now kicking herself for not doing it earlier.
She used a knee
scooter for a week.
One week after surgery she got a boot and could put weight on it. Three weeks later (yesterday) the boot came off and she can even drive now. So she only had one real week of total down time. She only had to take pain pills for 2-3 days. She was so dreading this surgery (and she's been thru some major knee surgeries, etc.). I've heard horror stories about how bad it is. But they've changed a lot of the techniques. My sister had an enormous bone spur that had totally torn up the tendon. The key is to get a surgeon who does this all the time and who keeps up to date on the latest techniques.
Good luck.