Team:

All work we have been doing thus far with EventLogging is documented in wikitech:

- General management of system (restarting, graphite, database)
https://wikitech.wikimedia.org/wiki/EventLogging

- Backfilling:
https://wikitech.wikimedia.org/wiki/EventLogging/Backfilling

- Beta labs (testing environment for us and end users) 
https://wikitech.wikimedia.org/wiki/EventLogging/Testing/BetaLabs

I think the main thing to communicate to end users of Eventlogging is that you can test events validating easily in beta and vagrant:

Dev Server in Vagrant:
https://www.mediawiki.org/wiki/Extension:EventLogging/Guide#Installing_the_EventLogging_devserver

Beta Labs:
https://wikitech.wikimedia.org/wiki/EventLogging/Testing/BetaLabs#How_to_check_if_events_are_valid

Thanks, 

Nuria