Expect to say "Oooh pretty" or "Wow" a lot in Vash and Uldum. Hyjal, Deepholme, and Twilight Highlands are kinda standard.

Yes there are some really big bottle necks in Hyjal and Vash... expect to get stuck for an extended period of time right off the bat in either. Also keep in mind you can farm plants and ore like mad once you get Azeroth flying, I might do that just to stock pile until the rush slows in the first couple of zones. If you can get your skill ups off the Hyjal nodes fast enough you can get ahead of the masses and really have your pick of the good stuff. Not sure if the the whole group still gets exp from node farming still... but if it does, keep your team with you while you farm.

There are so many things you can do that will be way less frustrating that the dreaded collection quests or camping the spawn points for fire elementals / water snakes.

Of course I want to see which nut on this forum maxes out Archeology on 5 accounts first! Ugh horrible thought... the pain!