The NCL Dream will be sailing from New Orleans during that time. Granduer of the Seas will be also. Hotels are WAY more expensive, so if you are flying in, this is one time I suggest flying in the day of. If you get transfers with the cruise line, they will make sure that you get there on time.
The Conquest is also sailing out of New Orleans during that time. You better hurry up and book it. It is a busy time and fills up fast.