Don't count out the Adventure Pass just yet.
While there was indeed a ruling in 2012 by the 9th Circuit Court that basically the USFS could not charge if one were simply walking through or otherwise "using" a natural area without amenities,
the Forest Service is saying that the court's ruling only applies to the one area (Mt. Lemmon near Tuscon, AZ). The FS claims that it may continue to charge elsewhere for all access including just hiking or personal photography. There's currently a case pending where some people in Southern California have sued the FS to have the Mt. Lemmon ruling applied to the four local national forests (Cleveland, San Bernardino, Angeles, and Los Padres). In the mean time, the Forest Service continues to post signs at trailheads and such stating that the Adventure Pass is required. The Forest Service also states that the pass is required on their website(s).
Since you can get fined $100 per violation, I personally would probably just get the pass until the court rules. See also this
San Gabriel Valley Tribune article.
In the mean time, I notice that the FS has been installing bathrooms and emplacing picnic tables at a lot of trailheads. Gee, now why might they do that? Well, the The Federal Land Recreation Enhancement Act (which essentially authorizes programs like the Adventure Pass), lists a series of amenities for which the Forest Service
can charge. It would seem that the Forest Service knows darned well that they can't charge for just hiking and is taking steps to prepare for the inevitable: Court ordered ending of the Adventure Pass for areas without amenities. I'm sure the FS realizes that it's only a matter of time before the courts rule that the 9th Circuit Court case applies to
all areas within their jurisdiction. The Forest Service's assertion that the 9th Circuit Court's ruling doesn't apply throughout their jurisdiction would be pretty laughable if there weren't money involved. Said assertion seems merely an effort to buy time, time to install potties and picnic tables.
HJ