I can offer dissenting evidence
Searching my mind back to New Year's Eve. I was rolling along, glass of wine at dinner, beer flowing but not chugging, and midnight came along, and the bottles of Bubbly started popping, and the alarm bells go off in my head, screaming "DON"T DO IT!' But alas, I did. BIG MISTAKE! And I paid a big price, with a very big head the next day.
Moral of this story is: Champers is for the beginning of the evening not the end! My better half is French, and also confirms that Champers should really start the evening...
Tramp because it fits how I felt New Year's day...