I have discovered while walking around in Isafdar, that whenever you have the dense forests that the agility requirement is only needed for the first forest of each set of three. Further, this requirement is only needed when traveling to Tyras camp, not away from it. I did the quest without the required agility level and used summer pies, I was able to go one direction through the forests without the pies, but not back. I was also able to go through the second and third forests (of a set of 3) without difficulty in each direction, but only one direction through the first forest. I'm not exactly sure how I would go about documenting this, but as I am still a level short of the requirement, I would document it if I knew how.
