Ron Parise would be the one to talk about blackouts at Wyndham resorts in N.O. My observation is that the Avenue Plaza listings on eBay block event weeks (Mardi Gras, Sugar Bowl, and at least some of the festivals).
The typical black out weeks in New Orleans are Mardi Gras, and the week before Mardi Gras. The two weeks of the Jazz Festival (weeks 17 and 18) and The Sugar Bowl (week 52) some resorts also black out the French Quarter Fest
Wyndhams La Belle Maison is all points and ARP is advised if you have particular wants and needs.
Avenue Plaza is mostly floating weeks, although there is some inventory available to points owners. (In the last year I have only seen one small points contract for Avenue Plaza on ebay). You will see most Avenue Plaza weeks advertised as "floating weeks except weeks 8,9,17,18 and 52. All weeks are deeded unit/week for inventory purposes, but these weeks are defined "event weeks" It dosent matter when Mardi Gras falls.on the calendar. Week 9 is a Mardi Gras event week ownership and owners of week 9 can reserve Mardi Gras.
Except for Mardi Gras, these event weeks are usually available to points owners at the 10 month mark. There were even a few Mardi Gas weeks available at 10 months (they were gone however a few minutes after 7am at exactly the 10 month mark.
So if you want New Orleans every year, Id advise one of floating weeks at Avenue Plaza, or a fixed week at one of the other new orleans timeshares, or Points at La Belle Maison for ARP