Halting State by Charles Stross
Full Scoop by Janet Evanovich and Charlotte Hughes
A Necessary Evil by Alex Kava

Little Brother by Cory Doctorow
The Snow Queen by Mercedes Lackey
Cradle and All by James Patterson

F5 by Mark Levine
Mary Mary, Cross, and Double Cross by James Patterson
Kill Fee by Gary Paulsen
Lucky You by Carl Hiaasen
3rd Degree, 4th of July, The 5th Horseman, The 6th Target, and 7th Heaven by James Patterson

Books I read on the cruise

The True Knight and The Wizard's Shadow by Susan Dexter
White Knight and Small Favor by Jim Butcher
Passage by Lois McMaster Bujold
Kiss the Girls, Jack & Jill, Cat & Mouse, Pop Goes the Weasel, Roses Are Red, Violets are Blue, Four Blind Mice, The Big Bad Wolf, London Bridges, and The Midnight Club by James Patterson
Dragons Wild by Robert Asprin
A Taste of Crimson, The Last Twilight, and The Red Heart of Jade by Marjorie M. Liu.
The Undead Next Door, Be Still My Vampire Heart, and Vamps and the City by Kerrelyn Sparks
One Bite Stand by Nina Bangs
Magic Bites and Magic Burns by Ilona Andrews
Touch the Dark by Karen Chance
Late for the Wedding, Dangerous, and I Thee Wed by Amanda Quick

Books I partially finished on the cruise:
Caliphate by Tom Kratman
Claimed by Shadow by Karen Chance

So, if you consider that I had two books left over, I read thirty books on the cruise! And that's with losing one day.

Since then, I finished Caliphate and read Goblin Quest and am partly through Goblin Hero (I misplaced Claimed by Shadow).

Books I finished before the cruise

The Prince of Ill Luck and The Wind-Witch by Susan Dexter