Chateau has the four lovely girls crossing Lake Pontchartrain on the causeway before Noon. And it looks like they may be running behind a bunch of others. So that leaves a lot of time to kill in New Orleans. The teaserflashpix do not always show exactly where a team goes in each city visited but include shots that are typical of that city just to establish its presense. SO, the ROADBLOCK could be there somewhere.
Preservation Jazz Hall to locate a particular musician whose picture they have?
A famous restaurant: Brennans, Court of Two Sisters, Antoine's, Commanders Palace, Arnaud's, Broussard's, etec. for some kind of Gross Food Challenge (four dozen Bananas Foster?)
Final Pit Stop could be in Jackson Square, Bourbon Street or on the Steamboat Nanchez.
Traditionally, the first episode is the only one not to have a Roadblock.