Double strollers are great...when they are unfolded!
Having to deal with either unfolding and folding them twice or carrying it folded through CBR while keeping two excited little ones from trying to run ahead just seems super unpleasant. Not sure how much time savings there would actually would be once you’re dealing with all that. On the bus you go through the process once and don’t have to walk somewhere to do it again. But I’ve also have had really good experiences with the buses and we don’t stay until closing, so maybe I would feel differently if I was waiting at the end of the night. But for me, the major benefit of the skyliner wasn’t the time savings (although that certainly was something I thought would be fantastic) it was the NOT having to fold the stroller, NOT having to remove a sleeping kid and NOT having to unload any of the random things we had collected in it throughout the day!!