I dunno if Uber and Lyft are or aren't allowed to operate in Yosemite, but at the Everglades site for the Shark Valley Visitor Center (https://www.nps.gov/ever/planyourvisit/svdirections.htm) there's this warning, which gave me a laugh:
"NOTE: VISITORS ARRIVING BY UBER - Due to the remoteness of this area we are finding that visitors arriving by UBER transportation are unable to acquire a return UBER, we suggest checking with your driver for return arrangements or have an alternative taxi option. There is no other public transportation to this site."
Edited 1 time(s). Last edit at 05/22/2017 05:31AM by Not quite The Geezer, but getting there.