So allow to to clarify my confusion:
I'm wondering how they prevented third class passengers from accidentally (or deliberately) wandering into second class areas, or second class into first class.
I know there were gates, but it seems difficult to place them so strategically based on the layout of the ship.
The only two classes that were "geographically" separated were first and third, as far as cabin placement goes.
But other than that, it's not like certain decks were mutually exclusive to certain classes.
Some decks housed both second and third class cabins.
Other decks housed both second and first class cabins.
There were also decks that houses facilities for two classes.
Example, both first and second class had a barbershop/souvenir shop. And they were located on the same deck, not far down the hall from one another.
So any gates would have to be placed more strategically from simply putting them on certain stairwells.
So if I'm a second class passenger going there, how do they stop me from accidentally going to the first class barbershop to get my haircut and buy my postcards?
Do you have to show your ticket? Do they place gates at varying points in the hallways on the same deck?
And even then, I'm wondering about another problem with that.
Not all first and second class cabins were permanent. There were some "Primarily first class/alternative second class" cabins, and vice versa to be used in periods of high booking, depending on whether first or second class tickets sold more.
That further complicates gate placement, if that's what they did, because a first or second class cabin on one voyage could have been the opposite on the next.
Had it not sunk on it's maiden voyage of course.
So, how did they handle all this?