Promote and install libreoffice everywhere you can
Originally Posted by Spectre
I used to use open office at home on ubuntu whilst having to use MS office at College. But it's compatibility with MS office's documents was very bad.
In this situation you should take Libreoffice with you, install it if allowed; ask to be installed; or carry a portable version. And do stick to common fonts, such as the ones in mscorefonts (arial and friends), unless you can also install the fonts you used at home.
There is also the choice of booting the whole thing from usb, the very same ubuntu you use at home with the very same packages.
Everyone should have libreoffice installed, and encourage others to install it, even if they prefer to use another suite; having it installed won't hurt and will make sure they can open and view documents made by people who can't afford the other suite.