Inverted Flyer:
Be careful about going into TBS with an infantry backround. Don't get me wrong, you are experienced, but but no means will it put you ahead of the game.
Any knuckle head can learn infantry tactics, what TBS teaches is how to apply leadership toward every facet of being a Marine Corps Officer.
Go in to TBS with an open mind about everything Whether it be the Humps or the tan belt syllabus (which you probably will do again) to Law classes.
As for fast roping and intensive small unit infantry tactics, this is all done at IOC. (Pilots used to be able to request IOC before flight school) You will never be in better shape or have a better time/ work any harder physically.
Good Luck!
When I look back at TBS, I had a blast. No other time (Can't speak for Pensacola) can you be paid like an officer and only have the individual responsibilities as a lance corporal. Work hard in the Class and in the field, work as a team player, and drink lots of beer on the weekends.