I'm 6'6" and haven't flown in nearly two decades - I have no idea if I'm going to fit into a seat at the moment, and have no idea how to check. I'm facing my first work flight next month and a honeymoon in January, and don't know what to do to make sure I'll have enough room. I know there's seat length available online, but who knows if I'll measure correctly and end up wedged into a seat I can't possibly sit into.