Mardi Gras is Feb 28, 2006. I don't know that it has a huge impact on crowds at WDW. There will be a few refugees from New Orleans, because their kids are often off school. But it is hard to guess how this year's Mardi Gras will be different from last year's. I would imagine that kids are soooo far behind in school that they may skip the days off. I'm sure New Orleans will do something for Fat Tuesday, but I cannot imagine it will be as grand as last year.