As to Swany's accent, it does come on stronger when he is anxious or tired or upset or excited or nervous, or scared.
Heh, heh! Makes perfect sense. With that palace visit coming up Swany must really be upset and tired. So I hear the weather is getting worse. Maybe Gaston will be finally able to catch up to current date, then?
"Take the cylinder out of my kidneys, The connecting rod out of my brain, my brain, From out of my arse take the camshaft, And assemble the engine again."