If you level with friends Prot would probably be the way to go so you could pull and face tank the packs. I leveled 2 pallies both ret on beta and had 0 issues. Selfless healer and wake of ashes work absolute wonders. I leveled a bit as prot and just felt like I did 0 damage. I leveled solo so I don’t know about the xp fall off but I would assume it’s the same as legion.
You can skill up your fishing from 1 to 150 in any fishable water in Zandalar or Kul Tiras. Go to the nearest water, find the fishing skill icon in your spell book (P) at the profession tab, drag this icon to somewhere on your action bar. Stand in front of the lake/river and press the fishing button. Mouse over the lure in the water, and when it splashes, right click on it.
Also get the Heirloom Mount. Being able to have basic riding speed from the beginning will save you a lot of time if you're starting from level 1. Allied races start at 20, so this is a non-issue for them. It's important to note that Pandaren can not use this mount until they finish their starting zone and pick a faction. Being Horde or Alliance is a requirement of the mount.
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