I also work in an enterprise situation, and 2016 has been in use in preview/beta (and a full O365 release) for a long time and we're comfortable with our understanding of the application and that it doesn't 'break' anything pre-existing on the system because it doesn't touch Office 2011. Heck, I've been using Outlook 15 for almost a year now. I suppose if you haven't been testing it, I understand why you'd want to go through a full validation process. We were chomping at the bit to get our hands on the VLSC version and basically ready to deploy it.
Select Install Office Apps > Office 2016 if you signed in with a work or school account. (Note: The link may say Office 2016, however Office will install the most up-to-date version of the Office apps as set by your Office 365 admin.). Install Office. Once the download has completed, open Finder, go to Downloads. Set up an account in.