If you are staying near the French Quarter, I would take a taxi from Canal St. It's $5 per person if you have 2 or more (rates and rules can change). No need to wait for the bus to load.
Food - shrimp, oysters, crawfish monica, COCHON DE LAIT PO-BOY, Frozen Cafe du monde coffee to start the day, if it's hot or not.
Bring lots of cold water if you can. Or don't bring anything - there may be long lines if you have a back pack that needs to be searched.
I enjoy the blues and jazz tents the best. Wonder around all the stages, they are all good.
Get there 1 hour before the gates open if you want to put a lawn chair down next to a stage.
Get there an hour after the gates open to avoid the initial mob.
Leave an hour before the concerts end to avoid the loooong lines for taxis.
Leave 2 hours after the last concert to avoid the crowds.
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