super-fast PotD exit?

[LunaFaye]

You can actually always leave stuff with no penalty as long as the party isn't full(4,8), or the final boss is dead.

You can also leave it after a specific amount of time. I think it was half the time of an actual duty. Example, duty takes 30 minutes (well the timer) you could leave after 16 minutes without taking the penalty. But they might have fixed that since it got abused a lot, however it was an option once at least lol.