- Few days off
- Sleep in advance
- Enough food
- Enough energy drinks
- Practice from the beta
- In-game items that speed the leveling up
This is all assuming that I have the chance to skip on my work and studies at the time. I'll try to be more efficient than I was with MoP. I lost a lot of time in the beginning because I was not aware of the elemental trick in the Temple, and because I skipped ahead too fast in some of the zones. I'll still be passing on the raid bottle, though.