Yep, I'm almost kind of sure these are all practical sets. To be honest, like Universal, this ip screams screens. You can't capture the size with real sets, you need screens, but I'm sure there will be some hallways with AA's.I don't know much about Star Wars lore, but an Imperial hangar seems to be quite large... so I can imagine much of the action taking place there.
Actual ride concept art:
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Unrelated awesome art I found online that looks like something we may also see on the ride:
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