Hey erikthewise,
We really take tape measures to carpet. Perhaps I should have mentioned that. True story: on my first research trip with the Unofficial Guide, Bob and team were dropping me off at my room at OKW. This is late one night after dinner. So Bob says "Do you mind if we come up and take a look at your room?" Being the newbie in the group, I said sure. So everyone - like six people - pops out of the van, notebooks in hand.
I end up standing in my room while folks around me are breaking out tape measures and pencils. One person is writing information. Everyone else is calling stuff out - new refrigerator, same wallpaper, looking for manufacturing dates dates on the bedding and appliances (to see how old they are). And I'm thinking "What the heck did I get myself into?" Fortunately, I'd not left out any Superman undies or anything. That would have been embarrassing. Not that I wear Superman und.....nevermind.
I suspect where our room sizes differ internally in the book, we've listed our measurements in one section with official information in the other.
An update on the transportation question: Three sources checked so far, three different answers: the Guide is always right, the Guide is always wrong, and something in between. I suspect it may take a call to Disney on Monday to clarify it. I'll post an update here when I know something definitive.
Len