No commercial activity.
Check it out:

The U.S. Forest Service vowed Thursday that a proposed policy change will not interfere with news-gathering groups’ constitutional rights to take pictures on federal wilderness property, following a backlash from First Amendment supporters.

“The U.S. Forest Service remains committed to the First Amendment,” agency Chief Tom Tidwell said. “The directive pertains to commercial photography and filming only. If you’re there to gather news or take recreational photographs, no permit would be required.”