A lot of factual information here about cruise passenger numbers, and other data done for a parking study at the Port of Palm beach, it's a long read but confirms the following:

Celebration passenger numbers have been increasing annually,

Port has been interested in a cruise ship to run every other day opposite of the Celebration for awhile.

It also contains nice pictures of proposed parking structure plans (Look at scenario #5)

Monthly passenger expectations are clearly shown in table.

Lots of other little interesting tidbits.

http://portofpalmbeach.com/DocumentCenter/View/663