Thanks!
We are early risers so we plan on being in line for the Skyliner as early as required to try to get as close to the front of the crowd for early entry. I was thinking starting at Pop would put us behind the guests from CBR/Riviera who would be arriving at HS by the time we are just getting to CBR station.
While looking at google earth I spotted a couple of ways to walk over, but I expect one of those routes would be using employee pathways only. There are other ways as well, but as noted above by WEDWDW, there are no guest walkways to use, so walking is not likely an option anyway.
Oh well, with the CBR station not that far of a walk, I thought it might be a bit of an advantage to start from there when the Skyliner starts for the day. But I guess it's not really an option.