I'm afraid I have to give Office 2013 a total NO NO for use on a laptop out of doors.
Menu's all WHITE - can't customize and incredibily difficult to use outside. I'd make the guy who designed that colour scheme sit outside for 6 hours everyday and be forced to use Office 2013 ON A TABLET too !!! and see how he / she gets on with it.
I can't see the menu's very clearly - Outlook for instance is all white and very hard to read if sitting with your laptop say on a terrace at your favourite bar or café.
There's no way to alter the settings for example on Office 2010 you can do a little customisation so menus are very easy to read even outside
For example Outlook and excel snapshots (2010). Easily visible even outdoors.