Late time is dependent on your BCT squadron. Aggressors is bright and early, Barbarians next, etc. Your late report time is only because Hellcats is the last BCT squadron.
As for your BCT flight (which directly corresponds to your Academic year squadron) you won't find out until you arrive at In-processing. Like some posters have already said, its tough to say how those squadrons are climate wise because they change as the people change. As each squad gets new juniors and obviously new freshman, the atmosphere adjusts.