Going with a party that's already done a quest?

What happens if I join up with a party and want to do a quest that I haven't done yet, but everyone else in the party has? Will the quest still be available if I talk to the questgiver, or does everyone have to have not done it yet?

In particular, I'm thinking of the one Devrona (again, I think that's her name) gives you in Ashford about going into the forest to drive off the grawls. I've tried doing it a couple times on my own (W/R7) and get pummeled because there are just too many enemies to handle. I'd like to go with a party but then thought of the above scenario and was wondering what would happen if they've already done the quest.

m19

It should still work for you. They just won't see where to go like you do with your green arrows and such...unless they remember it.