just back from 3 weeks at WDW...
yes, the new opening show is at the castle..
i assume what you're describing is doable, though we never went that direction at rope drop.
We'd planned on doing it one of our MK days, but the person who wanted to do space mountain was sick, so we went the other way...
but from our experiences rope dropping fantasyland and adventureland/frontierland, i assume your plan will work...
although buzz does get a very long line, so i don't know if you'll be able to do both space mtn and buzz....
the TTA doesn't have a FP, but there's really no problem doing that one at any time of day...
by the way, there's another reason to rope drop space mountain - when we were there, they had the FPs turning right and the standbys turning left...
given that i much prefer the left side, i would only want to ride it standby if they're the only ones turning left..
and the only way to go standby is at rope drop...
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