Hi Steve
Event Aggregator’s license is a bit unique. It doesn’t matter how many domains (or in your case, sub-sites) that the license is activated on. EA’s license is based upon how many times the query is run to import events.
Does that make sense?
So your license level should focus instead on how many import queries you anticipate being run. Remember, we count not based upon single events being imported, but how many times a user schedules or runs an import session.
Is there anything else I can help you with?
Thanks
Courtney 🙂