Subsidy for travel is based on distance traveled. The idea is one delegate for every five meetings. Typically 60-70 attend. Observers are welcomed, but don't vote. Trustees don't have to pay travel.
Trustees have their own meetings separate from the ABM meetings.
It's a four-day conference. SLAA also has a recent experience where the general manager of the office resigned after six or seven years. That person had every password, code and key, and gave two weeks' notice. That sent the board scrambling. They have a lot of experience to share if SCA ever decides to hire an office manager.