Hi there, Janet!
My little ones are in love with the
Disney Skyliner. On our last vacation, we were able to ride in the gondola with The Haunted Mansion wrap, and my son thought he was the coolest kid in the whole park.
Janet, hours for the Disney Skyliner can be updated at any time, and are also dependent on the weather. While the hours for the Disney Skyliner will be posted on a board at each station, you will also want to double-check with a Cast Member at the Skyliner Station that they will be operating when you are heading back.
If the Disney Skyliner is not operating, please do not worry! No one will get stranded at the Most Magical Place on Earth, you may just have to head to the front of the park and
take a bus instead.
Now Janet, the last time that I visited we were one of the first families to arrive at
Disney's Hollywood Studios. I can tell you first hand that the parking lot did not open until 30 minutes before the theme park, but the Disney Skyliner started operating much earlier. So if you are looking to get to the theme parks as early as possible, I would stick with Disney transportation.
I hope that this answered your questions about those magical gondolas in the sky!
Enjoy your flight!
Sarah B.