I went through Maldraxxus quite slowly with Kaelinda; for various reasons, I averaged about one chapter in a sitting. Kaurinka burned through it in two sessions (maybe because it was the weekend?).
The second playthrough of the zone went a lot more quickly and smoothly than the first because I knew where to find the quest objectives, what I needed to do for some of the less obvious quest objectives, better ways to path through things. This is, of course, how it goes in every expansion. I found myself wondering, should I send someone else through Ardenweald first, so Kaurinka can have a smoother run? I quickly dismissed that thought — the most valuable part of the first playthrough is that the story is completely fresh and new and full of surprises, and I want to be learning the Ardenweald story fresh and new and full of surprises with Kaurinka.
To allow Kaurinka to Rest awhile before she continues her journey onward to Ardenweald, however, I’m going to spend the next few nights bringing Kalaneia, Keliora, and Kaelyla through the Maw to Oribos.
Kamalia et alia 
Nice, I think rest management as part of the game strategy is kind of fun.
Having lots of alts certainly helps with that!