Guildie and I picked up two Shieldwall reputation quests in Lion’s Landing. We both completed one of them and my guildie completed the other. Picking up the Weathered Journal in the big tent after distracting Garrosh.
I could distract, but there was nothing in the tent to pick up for me. I abandoned the quest and picked it up twice, still not able to complete.
The journal is sitting on the table Garrosh is standing at, not inside the tent. (There’s another quest objective inside the tent — the one about bugging stuff.) It’s pretty small, and very easy to miss. (There are several books on the table, and it feels like it’s the least obvious one.)