Stay away from Beerfest on Bourbon. That place is a rip off if there ever is one.
One word of advise. Go to Bourbon for 3-4-1 if that's what you want to do. Note that 3-4-1 is crappy commercial beers with the exception of Heineken and Abita Amber (local brew).
Be aware of gimmicks (price wise) at the bars on bourbon. Unless a price is posted, they charge whatever they want. Ask for a price before purchasing, especially if you venture into Beerfest.
As I mentioned in a previous post, check out Bayou Burger on Bourbon. They do have some craft brews on tap.
Recommended craft bars: Ave Pub, Bull Dog on magazine st.
Second Line Brewing is a new craft brewery. They are only open Friday and Sat. They are located around city park.