It depends really on your level. If you're Lv. 180 then you're only able to do Coral I think. But for me, I am able to do eleven quests and altogether it gives 25-30%. Each places goes up by 15 levels. So Coral is 180, Desert is 195, Mega is 210...etc.
once I hit 290 Ill be abusing those abyss quests like mad xD
"This is how it works: you're young until you're not, you love until you don't, you try until you can't,
you laugh until you cry, you cry until you laugh, and everyone must breathe until their dying breath."