Just saw this thread, Jeff, sorry I'm late in wishing you all the best with your new knee.
I had a total replacement done on my left knee several years ago and it was the best possible thing I could have done. Had the replacement done in early January and started a new bowling league the following April - right-handed bowler so I slide on the leg with the replaced knee. No problems at all since.
You're going to love walking without pain again.
Only limitations my surgeon gave me are no jumping and no running - there went my NBA career! LOL. He also said no kneeling on the replaced knee. Make's it kind of awkward getting up from the garage floor but I manage.
Feel free to PM me if you have any questions on anything or just want to talk about it.
And yeah, TSA is going to love you as you'll always need to be wanded at the airport from now on. I just volunteer the information when I hit the gate.