The sim check is I believe not so much a test of flying ability, although that is obviously a factor. It is designed I think to provide a level of stress and see how an individual deals with it. I just talked alot.
The interview is straight forward no trick questions or scenario's, in fact probably the easiest part of the process.
Stand up presentation involved standing in front of a panel (about 8 people), talk for 15 maybe 20 minutes about a) yourself, b) your experience and c) why you want to join