Most players who are leveling their alt classes will of course immediately jump into dungeon the moment they hit the level requirement. Because they want the reward for roulette so they have to get to level 16 to use it. level 16 happens to be the minimum for Tamtara so everyone of any higher level will be queued into that place. AK is part of the relic quest and Pharos is one of the dungeon needed to clear for Animus Book.