So do I get to pick when I fly inbetween my other classes or am I going to be given a specific block and have to conform to that? TIA. See you this summer or fall.
I've always looked at the permanent launch time as more of a "last resort" time to get stuff done. You have to be available for that time, but, like others have mentioned, there are no requirements that state that you have to only launch at that time.
Usually, you launch at the most favorable time for you, your instructor and his or her students. If your instructor has a lot of students, this may create a situation where you will have a hard time scheduling lessons and getting things done since other students are scheduled to do lessons at the same time that you want to do lessons.
In this situation, it's good to have that permanent launch time that basically says, "Okay, this is when we're scheduled to launch, so let's do a lesson and get something done." Your instructor's other students
will not have a permanent launch that is at the same time that yours is.
Now, if you pick an instructor with a launch time at 8:00 a.m. (like I did

), you may not like the fact that this is your scheduled launch time because it isn't exactly the most favorable time for you to do lesson (because you may want to sleep a little longer), but, sometimes, that's just what you're going to have to go with.
The reason why my launch time is this early, even though I hate mornings like I hate idiots, is because I chose someone that I knew was an exceptional instructor, and the only available launch time that he had was at 8:00 a.m. So be it.