For me, it depends on the ship and what the day has planned. On Disney (and with kids now) I'll have the camera w/m 100%. I usually never carry the camera on-board unless I'm planning on getting some specific pics, since I'm always afraid I'll forget it. I usually have an idea of what I/we want to see/do from the navigator, so I don't bring it with, but again, kids have short attention spans. I usually won't carry a book w/me unless I plan on sitting and reading, but it IS a nice thing to mark your chair with when you need to hit the restroom or bar. I also usually have a beer or bucket of them with me, and yes, again kids will change that too. If it's just my DW and I, no problemo, but I'll mostly have N/A drinks since my kids don't need to see me buzzed/drunk, nor should I be when I'm around my kids. I want to see everything through their eyes, which is where the Disney magic happens.