By Asura.Pergatory 2017-09-14 11:58:41
Dude it only takes a few hours these days right before the conquest tally (so sometime on a Saturday) to take these zones.
Just go to the zone and kill campaign mobs. It doesn't even matter if there's a campaign going on, or if you have campaign tags. All that matters is that there are some mobs with sword icons to kill. I suggest killing the NM first to encourage a retreat.
(Ok, I guess it takes more like a couple Saturdays because mobs don't spawn in the castle until the Icelands are controlled, as far as I recall.)