Quote Originally Posted by crowdx View Post
But does this "trick" not run into the 5 dungeon per hour lockout? (If you are able to run as quickly as FirstCow)
If you use the dungeon tool to enter and leave the instance (the button on the minimap that says teleport out/in of the instance) then there is no restriction of 5 / hour. So first time use the LFD tool to queue your whole team, kill garfrost, reset instance, use the minimap button to leave/reenter instance.

You can do this forever and you will not run into the "too many instances" issue. But if you try to enter another instance in the normal way, not with LFD tool, you WILL get the "too many instances" message.