@LaurenBallantyne - "Something to keep in mind when working with non-hosted services is that related records will only work for 11.2 services."
My organization is currently running a 10.8.1 install of ArcGIS Server. We don't use enterprise... will 10.8.1 non-hosted services work when trying to view related records in the new map viewer? If not, is there a release date planned for ArcGIS Server 11.2?