Well you probably will have to stand in at least a BIT of a line to pick up your ticket. Then you have to walk to the bus or carriage pick up location. Then you may have to wait for said transportation. Then you have to get up the mountain And neither the bus nor the carriage are particularly fast. Then you have to walk from the transportation to the actual castle.
And it would be nice to be there a couple minutes before you have to so they can explain where to stand and go and when.
Now if you want to go all the way to Germany then travel from Munich to see the Castle and you wish to take a chance on missing it to save yourself a half hour on your trip please feel free.
But if you allow so much as 10 per step outlined about you will need 50 to 60 minutes from getting in line to pick up your tickets and getting in line to enter the castle. So. I am not seeing exactly what the problem is.
You plan your trips with that tight a schedule?
How are you getting from Munich to The castle ticket pickup location? Aren’t you building in extra time into that (a LOT of traffic in and around the castle.)
Well I guess it is up to you. So feel free to ignore the advice of the folks running the place. I mean what do they know?