With equal respect, that's EXACTLY what this thread is about... OP is expressing huge trepidation about planning what's supposed to be a relaxing experience. They're probably going to spend an amount of money equal to a year of college at a medium-ranked state school, or a fairly recent used car, and they're "seriously anxious" about it.With all due respect, that's not what this thread is about. Getting into yet another debate about the pros and cons of the current state of Walt Disney World does nothing to help the OP or answer their question. Better to leave those discussions for the many other more appropriate threads.
I don't blame them. One false move (witness those first 5 mornings of Rise of the Resistance) and at least one whole day of their vacation is severely impacted. Rely on the Skyliner for transport to get to dinner at Monsieur Paul, and if it goes down, the evening is ruined. Pick the wrong day to visit the MK and you could be stuck armpit-to-armpit in the mosh pit the Hub has become.
The only saving grace is that they're not total noobs at WDW, so OP has a good idea of what the resort complex is about. But it's a shame most of the advice on this thread has been "don't expect to do everything" and "temper your expectations."
Realistic advice. And sad.