One of the important details from this concept art is that we are on a First order star destroyer... in space.
That provide a lot of clarity to the details that
@marni1971 and
@JediMasterMatt etc have dropped. First Marni has outline where the actual ride mechanism takes place leading to the presumption that this huge bay is actually a queue room.
We have a large crashed engine cylinder that we believe the resistance has set up in, sitting outside.
Based on all that I figure queue progression goes as such - covered open air extended queue - resistance pre show with mission briefing - queue through cave filled with resistance fighters - queue leads into first order stolen transport ship - pre-show (and probably one of the real kickers of a pre-show where we are transported into space) - large docking bay queue space as seen in concept art above - ?third pre-show with instructions from First Order (have we offloaded as potential civilian recruits?) - board the resistance transport vehicles.
Now some kitchen sink thoughts I have:
-The force field into space will obviously be a giant screen. Will they use some parallex effects/musion? Will we even see an effect where a tie fighter takes off and leaves through a brief opening in the screen to space?
-How involved will our transport into space be? Perhaps that's where MiceAge got a bit of mixed signals with getting on and off the 'ride'? It could be as simple as Toyko's Centre of the Earth elevators, or will we get a bit more of a seated preshow with some actual simulation?
Purely based on how everything is laid out though I think what is particularly novel about the potential layout is that the pre-shows could be a bit more evenly distributed amongst the queue. Instead of a clustered pre-show at the end of the wait we could see a wait - preshow - 20-30 wait - pre-show -20-30 wait - preshow - wait to board.