You don't want to be 'THAT' guy who has no idea how to use a PC because he's been using a macbook his entire year. You can buy a cheap and decent one for ~$300 during the holidays. Just get a PC now and start getting used to playing around in excel. Doing work remotely is already slow on a PC, so I would think running bootcamp and then remoting in will slow it down even more, though I've never tried.
Yes, you can request a laptop when you're traveling. I'm assuming you're trying to remote in from home when you have 1-2 hours of work during the weekend, not for traveling purposes (like some mentioned above).
