A: This is one of those little gameplay adjustments I've had on my list to make for those of us doing survival or no-fast-travel

I like to visit Nuka-World at random, and got tired of having to take the full monorail tram ride back EVERY SINGLE TIME, especially once you start doing quests that involve traveling back and forth.

Well, not any longer!  After your very first visit to Nuka-World, any returning trips from the Commonwealth will give you a prompt when activating the monorail controls, asking if you want to Travel to Nuka-World -OR- Travel to Nuka-World (Fast).

Selecting the Fast option will fade the game out and play the monorail departure/arrival sounds, and you'll fast-travel to the tram station in Nuka-World.