Be down to earth and honest.
Ask them does the probation deadlines in the contract actually mean anything?
Is it ok to be treated poorly by upper management?
Be passionate in what you want to achieve, and be honest in your intentions of helping others.
Be friendly and confident
Be friendly and approachable
How to pre pare urself for an interview or by doing a mock interview
Be yourself, be confident and have fun.
None they run it great