I agree, Ren. I mean, "Do as I say but not as I do" doesn't work for any kid, GT or no. I think requiring that everyone speak to others--regardless of age--with respect and compassion is important.
I do make the distinction that in matters of safety, I may be required to give orders. I don't say "Please don't walk out in front of that car." I say, "STOP! Don't you move!"
Also, if I have said "Please wash your hands for dinner" and no one moves, I get less and less polite with each successive request. If they're rude enough to ignore me, then I get more and more directive and less concerned about niceties in response. I'm okay with that, as well.