not sure if this has been posted yet or not but here goes..
I know halloween has passed but the Gibbler Goblin Trick or treater is still up and you can still do this probably untill the next patch.
Save your bind point a a very highly populated place in your city, I did mine in CastleView right infront of the inn.
Find the trick or treat goblin in north qeynos and start your "call to qeynos" right before you accept the quest.
You'll port where ever you bound your location and you can run around grabbing as many treats as you can. Much easier then NQ.
This trick will work in freeport as well.
It makes it a lot easier to get the top masks of the perspective cities!.