The stories I read said the ship is completely without power, including the pumps that power toilets, sinks, and showers. Yep, 4000 people on a ship with no good way of going potty!

It would make sense that food would need to be brought in. They probably have propane for the stoves/ovens but no other powered cooking devices (microwaves, icemakers, freezers, blenders, soda fountains, etc) are working. Nor do they have any way of washing/sanatizing the dishes after a meal.
Most interior hallways do not have any portholes and would be pitch black, as would any interior cabins. I can imagine the ship having a curfew to avoid any liability issues with people getting hurt while stumbling around in the dark.
It's a worst-case scenerio in a lot of ways...I wish I were there!!

-Blast