Yes, ski lifts do run at night, but it's less usual for gondolas to because they traverse areas that are typically unlit, being much higher up off the ground than a chairlift and covering much longer distances. There are trams that run at night but those are operated by trained personnel in the vehicle, all the passengers are together. So it'll be interesting to see what they come up with for lighting, if they do. They may not want people alone out there in the dark, though honestly it would be pretty cool to be there and see all the lights from the parks & resorts!
I'm sorry, I was just trying to answer a question another person had asked about the A/C and why it would be unlikely. Thank you for describing what will be done, that makes a lot of sense.
Did they say what operating hours would be yet? I hope that the hours will be the same as other modes of transport, but I could see why they might not be. Crossing my fingers for it to be done by late May! We're staying at BWI and I'd love to take a ride or even just see it from the ground.
Park close is one of the most demanding times for transportation, so I cannot believe they would install a system that they did not intend to use after dark.