I think it'd be awesome of Stephen Amell could enjoy the best of New Orleans and that includes Mardi Gras.
I challenge one of the Krewes to reach out and invite Mr. Amell to ride on one of their parade floats.
My recommendations are: Bacchus (Knocking Point); Chewbacchus or Endymion. The Krewe of Caesar in neighboring Jefferson Parish would be a good choice, too!