I hope you can get him there. Having to shout at someone just to make them understand is both frustrating and irritating. We've got enough to deal with without having to deal with that if it can be helped.

My husband will buck up about appointments I tell him about in advance, but if I don't mention it till the day it's scheduled for or maybe the day before, it usually goes easier. He loves to go out to eat, too, so if I mention we'll stop somewhere to do that, he usually doesn't object as much. Based on what you're describing, I'd say there's a good chance your husband needs to have that appointment. Good luck!