HA! I lived in NOLA for a few years, so on more than one occasion I was one of those "drunken college students" taking the free tour!
The quality of the tour differs depending on the season, drunken-ness of the guide, etc. but I certainly had more good tours than bad ones. And some with highly knowledgeable brewers.
Generally I'm a big Abita fan. But, I find I prefer their kegged beers over their bottled ones...All through my college years they wouldn't bottle Purple Haze for fear that it wouldn't translate well. I don't think it did as I've had lots of skunky bottles of it.
When you can get Abita fresh I think they are great. The closer you are to south LA you can get their wonderful seasonal offerings too. Those were always a pleasure.