Sheesh, I have a ton of friends and if I wanted to socialize, I would invite them. I was only in the hospital one day, but I did not feel like chatting with anyone. I think I was asleep most of the time!! You are right though, it is a relief to get home and be in charge of your knee.
I hardly ever ate while in the hospital, so it is just silly to think that a bunch of folks with new knees want to sit in a chair, with their leg down, chat with a total stranger and then get up and walk 250 feet!!! Really!!
I find if I am not angry, but firm, I mostly get my way. No, I don't feel like going down now---maybe later. Oh it sounds nice, but I am sleepy. Oh I am sure it is a good program, but I work as a ski instructor and it is a relief to be alone for a few minutes. Just be creative. No one can force you to do anything---you are paying the bills, so the customer is always right.