Mike,
What a great effort! Turns out that there isn't much I can use, as I'm so late in my trip, and I've used TripIt to keep track of many of the travel and itinerary details. I did borrow your ideas for the dining plan credit calculator, however. (There's only two of us, so my table is much simpler.)
One thing I do have is a packing checklist. Just a list of things to remember to buy / pack. I also have a table with travel times from our resort to various locations (cribbed from the Ultimate Guide to WDW).
I did use your ideas to help pretty mine up, though. I hadn't realized that Numbers had so many great formatting options until I started digging. I guess that's the trick with context-sensitive menus.
Let me know if you'd like to see mine, and I'd be happy to send it over. And thanks again for sending it to me!
(Side note: I would love it if Apple added the ability to add drop-shadows to text. Would make it so much easier to actually read text overlaid on a photo.)