Since it's pre-season, walk-up Saints tickets should not be difficult to obtain at all. I'd figure if anyone else was interested, we'd just "wing it". The Superdome's not far from where most of us will be staying anyhow.
As far as an expensive cab ride to the swamp tours goes (it's 25 minutes), I have a Taurus rented (a whopping $79 for the 3 days including taxes, a AAA Hertz special) that can hold 5 interested swamp victims...err, adventurous souls. There are also some beautiful antebellum homes and plantations that we can "bus" tour if there's interest; a paddlewheeler ride on the big muddy can be also be an relaxing way to spend a few hours lazing on the river.
If we wind up with no planned activities out of the quarter or downtown, I'll nix the car as the date gets closer. There are also some intersting activity possibilities listed here:
http://neworleanswebsites.com/cat/tr/to/sw/sw.html