Okay, so I couldn't find instructions on how to unlock WQ for the Broken Shore on my alts and it seemed strange because I have them unlocked on my main even though that toon does NOT meet the rep requirements.
I have repeated this multiple times on alts, none have any legion rep, my main doesn't even meet the Valajar rep.
Here is what I did.
-First Go to Legion Dalaran and talk to Khadgar in the Violet Citadel (about 28,48)
-Get and Complete Uniting the Isles.
Now this "Khadgar" won't have the next quest for the Broken Shore.
-Fly over to Krasus' Landing (66.25, 42.03) and talk to this "Khadgar".
-Pick up the quest Armies of Legionfall and complete it.
Next this same "Khadgar" will give you Assault on Broken Shore
-Either complete the assault or skip the scenario.
Once that is over, you should be at Deliverance Point on the Broken Shore with WQ unlocked on the Broken Shore and the rest of the Broken Isles.
---NO Reputation Grind is needed---