MacBook is Speedy, but no FireWire 800, Modem Ports
Do you carry a phone cord with you? Because, as I'm sure you know, not all hotels provide nicely detachable cables with their phones. If you don't, well, I'm surprised. If you do, simply superglue an RJ11USB [USB modem] adapter onto the end of it. Problem solved.
If I had mod points you would get it. Good insight. I've actually had an RJ11 cable in my various laptop bags for the last 8 years, I think I have used it maybe 4 time, the most recent being 3 years ago. I wonder if it is still there come to think of it, I actually haven't had to look for it for quite a while.