Trying to do the Chapters for the anniversary event however I need to go to Vol’dum. I can’t get there, no one on the boat will talk to me, the boards are not interactable and there is no quest giver to open the Horde islands. How am I suppose to get to them?
The usual way is to progress the BfA can campaign to the point that you get the quest to earablish Alliance footholds (camps) in the Horde zone.
If there’s supposed to be a skip, I’ve never heard of it.
You have to do BFA and unlock the quests for the Warfront
thats the thing, theres no quest to start it either
Best bet then is to hearth out, go back to SW. Talk to the mage, and have them send you back. Then drop any quest you might have, and fly through that dark portal while still on WoD Chromie time. Should bring you either to the quest you left off on and show it to you, or skip it all and bring you to Velen on the beach 
Good luck!