Replying to PC: Fast Track Pass - Is it worth it?

Headed out to PC 10 days for my winter break, but will probably split time between pc, canyons, and dv. My moms trying to get lift tickets ahead of time, and she was asking me if she should get the "Fast track" pass. does anyone know anything about it, is it worth it? like, are the lines in the express lane really shorter (remember this will be the week of/after christmas), or does everyone just get the fast track so it's just as long?