I know what you mean, B2Y. It's indeed a balancing act.
My oldest son asked me the other day what I'd like to do if I could choose anything. Go to the mall? Go out to eat? Go to the Laser Show at Stone Mountain? Go to the Zoo? Go to the Aquarium? There was more suggestions but you get the picture. All these activities (with the exception of going out to eat) require lots of walking.
I tried to explain to him how difficult it is for me to make plans for a later date because I never know how I'm going to feel on that particular day. You know what he said to me? He said "you never complain so we don't know when you're having a bad day".
Well, I really try not to complain because nobody can really do anything about it. I don't want to spoil their visit with griping. But maybe I need to start letting them know. How do you know when to speak up and when to stay silent? If I spoke up each time I was uncomfortable that's all I'd be doing!
Where's the happy medium?