Wow fink you really jumped out there on that. Of course you could be DF'd for attending your df'd sons weding. Is it automatic.... No of course not, but it is certainly possible.
So unessary to take such a hardline on someone elses decision that bears no impact whatsoever on your life.
James, glad to make your aquantiance. I only recently got out of the elder thing myself. Huge burden lifted! Hope it all works out for you and look forward to speaking with you more