Assistant coordinators are always in demand as businesses are often in need of someone to help them with events, and make sure there day to day projects are finished. Often coordinators are too busy, so they will hand out there work to assistants.
The salary for an assistant coordinator is in the $30,000USD -$40,000USD range, depending on experience and education.
For an assistant coordinator to be successful they need to maintain numerous contacts in their industry and make sure that all of their tasks are completed on time and on budget.
I think if you really want a job that demands a lot from you, being an assistant coordinator could be very rewarding.