Use Tanaan Portal Device, received at the end of the access quest, at ( 15, -25, -5 ) Copy/waypoint 15, -25, -5 and then click on the portal that spawns.
Only one person needs to have done the access quest for the entire raid to enter.
Zone in and respawn areas are not necessarily safe.
If someone in your raid steps too far forward upon zone in (over the rocks as you come out of the water) you will aggro some trash mobs. Make sure your raid comes up out of the water to avoid accidently clicking and zoning out if this happens.
Managing the adds in this zone becomes key in defeating most encounters.