St. Louis gets about 1/2 a million people in for the Mardi gras parades and parties. Not as wild as NO, but wild enough that I have never been downtown for one. They have been celebratig it for 25 years or so.
It is the 2nd largest Mardi Gras in the UA. Google it.
I guess Mobile will just have to be happy being the oldest - yes, even older than New Orleans.