Also my TA who just went on this cruise is the one recommending this guide. Here is a link to her trip report with her pictures from that day. You can scroll down till you get to her day in Naples. It has lots of pictures so I hope you have high speed!
http://www.disboards.com/showthread.php?t=2435876
http://www.disboards.com/showthread.php?t=2435876