Lee, I hope your surgery and rehab go well. I've had two arthros on my right knee but really need a replacement, they just don't want to do it yet. Everybody I know who has had one done has said they wished it had come sooner!
As David said...don't worry about feeding the chids. They'll be just fine as long as they're being watered.
As for the "Public groups" question, OB offers a private forum to orchid societies (unfortunately not many have taken advantage of this wonderful option
) and the folks who would be in those groups would be included in the "groups" list. You have nothing to be concerned with.
Good luck with your surgery, let us know when you're ready to go for a run!