It is pretty much a mess there it will probably be days before they know themselves.
I would check with the cruiselines as the date approaches
My brother is in Houston and said Galveston was hit pretty bad & Kemah which is closer to the cruise port.
I saw pics on T.V of Kemah & the boats in the marina there were tossed about.
They are still in search mode & clean up is starting
Alexandr Pushkin, Carnival-Holiday, HAL-(old)Westerdam, Orient lines-Marco Polo, Royal Olympic-Olympic, NCL-Dream, Dawn-Princess, ACCL-Grande Caribe, Oceania-Insignia (3), Regatta(4) Marina (1) St Lawrence Cruise Lines-Canadian Empress
Scenic River cruise June 11,2012