When I was at my P2 Presentation, the Cpl giving the presentation told us that when we got to the Interview, or if we got to OASC, we should stick to our opinion, no matter what. He said even if we said something in the individual planning section of OASC like 'then we'd walk across the water' that we should stick to our plan, because as soon as we allowed the interviewing officer to change our mind we'd have lost any chance of successful in our application.