Don't worry Hoffy, everyone (Maximillian Rufus Mosley included) has lots of unanswered questions...
Yes, the pit-lane will be opened 30 minutes before the race. (was it 45 minutes last year? :confused: I don't remember) They can drive whatever laps they wish, but it is a bit superfluous since all of them will be saving fuel. Much the same situation like Sunday-warm-up cancelation.