Wow, wow, WOW! Thanks to everyone who urged me to go on my OKW vacation, even with knee problems. Just got back and it was great! It helped that there were no big crowds, and our villa was located close to bus stop, etc. I feel like I was covered in pixie dust from the time I first posted about my worries here...and so many of you suggested ways to get around and HAVE FUN! Oops, don't mean to shout but this was a truly magical holiday. To think I could have chickened out...well, thanks again and Merry Christmas to everyone! 
