Can you advise me if 3.0 has the facility to add addresses using latitude/longitude as the events I want to add are for outdoor events and will not have a standard address?
At this time, there is no built in way to use latitude and longitude for event addresses. One work around would be to add an Additional Field for that data, but it would not replace the address field (you would need to leave that blank) and it would not work with maps or location search. Does that answer your question?