What are the pros and cons about Moscovia dungeon having a quest?

[Nachi]

Actually, i've never done the Moscovia Quest before on any server.
It always seemed too much of a bother...
But i kinda want to do it and go there at least once.
So, looking at Iro Wiki, is it exactly the same as stated in the guide? Does rl time matter when doing the quest?
And do you have to do it all to the end? (The items you have to bring later are a bit more difficult to farm than those at the beginning, that's why i'm asking. xD)