Detroit Metro Airport Charging Stations

Has anyone used the Level 2 (J1772) ChargePoint charging stations at Detroit Metro Airport?

  1. Is it ok to leave my Chevy Bolt plugged in to one of these charging stations while I go on a trip for a week?

  2. Are these charging stations actually available or are there normally non-electric cars parked in front of them?

  3. Is it safe to use them, or is it possible that my car will be vandalized?

  4. Am I asking these questions in the right forum?