Yesterday I was able to install and activate Office 2016. Unfortunately, I updates win 10 from Build 10036 to the new version - and that killed the activation. I can not activate Office anymore with Re-loader.
MTK is definitely the easy way to go. Activation does not get messed after updates. Refer to "KMS tools" sub forum and to "Discussion: Office 16" here about VL conversion. All the best.