Hi Guys
Did that for A320 last spring but I guess it willbe about the same for 757.
Tech quiz on a320 (System description, limitations...) just about like the one after the conversion course.
Then a nice chat with two guys from HR and the Chief Pilot. CRM topics, technical matters and procedures (TCAS...).
All in a very relaxed manner. Got there and be easy on it. They won't eat you!
Good luck!!
W_G_U