They have come a long way when it comes to knee surgeries and wether it's the ACL or the meniscus you should be able to be back to your regular activities relatively soon (way sooner if meniscus). From what I've observed the choice of surgeon and physiotherapist is key and I would personally chose a surgeon who favours quick (after the surgery) aggressive physio. From personal experience I would add that continued strengthening of all the muscles around the knee will make help a great deal years after the surgery. Good luck!