Then to add to that, the experience, from what I understand, is mostly the same every time you go.
You've hit on one of my soap boxes. The concept of repeatability in immersive/interactive theater (which is what Starcruiser actually is -- a 2-day long show, thus the need for a bed) is a fascinating design challenge, that poses a few questions:
Should Starcruiser be repeatable?
Being necessarily (trust me) priced at an aspirational level, to what degree will guests want to view their once-in-a-lifetime trip as "definitive" and not merely one rotation on a spinning wheel of persistent narrative? Additionally, as was made clear in the design of Galaxy's Edge (the decisions for which made certain considerations for Starcruiser a moot point, as they are tethered to the same point on the timeline) the only way they would be able to nest themselves within the current "canon", as seen by the Lucasfilm story group, would be to have a Westworld-style daily reset that sees you visiting the land on the same fixed day every time you visit.
That was the tradeoff: if Imagineering wanted to build a systemic, ongoing, persistent narrative, you forfeit all of the cross-platform connectivity that (theoretically) comes with being an arm of the current canon. But if they wanted to depict sizeable, non-repeating events with galactic consequence in their attractions (the route they chose) they could inherit all of those benefits.
How repeatable is Starcruiser in its current form, right now?
Obviously this is a matter of personal priority, and multiple factors can contribute to how you might estimate levels of repeatability. The example you gave ("it ends the same way every time") is a plot-based value. If that's you're only metric, and your main interest in participating in this type of experience is to affect a binary plot outcome, then the answer is "not at all." But for my money (literally, I've done Starcruiser twice) there's a foundational component to the structure of the experience that lends toward repeatability:
This is a Broadway-caliber show that lasts 2 days, but it isn't structured to be experienced like a traditional show, or even a traditional "immersive" theatre production. Rather than thinking of it as a linear story or even a branching video game (or choose-your-own-adventure) narrative, it's shaped more like a cluster of story "nodes". Think of it like a cloud of character invitations and opportunities. The branches of this tree are fixed, yes (the story is considered a canon story) but the way in which you choose to climb that tree, which branches you hop to and from, and in what order, will completely redefine how you interpret the shared events happening all around you.
There are many rooms on this ship. Scenes are happening in those rooms simultaneously throughout your voyage. Which characters you choose to follow, which invitations you choose to respond to or reject, will determine which pieces of this massive story puzzle you have. Like the best real-world interactive experiences, the audience is not being
told a story, they're assembling a story to tell to each other. Comparing notes and forging bonds with your fellow passengers is part of the unique appeal only something like this can enable.
That level of simultaneity affords a lot of repeatability, by my estimation. It's like a faceted jewel, and you can look at it from a different angle each time and see unique refractions. Is it infinitely repeatable? For a few, it will be. (Like folks who have seen Macbeth 100 times.) Certainly not as infinitely repeatable as a more systemic, open-ended, "emergent" structure would afford, but that would come with an experiential cost that I think few would be willing to pay for. The types of stories you can tell in a structure like that are artificially limited. The structure they have now allows them to tell a canonical tale, with a whole lot of Star Wars depths within the various nooks and crannies of its clustered story space.
It's the type of experience I've been wanting to exist for years, and I sincerely can't believe they were able to get the green light. It's a miracle of a place, and I can't wait to see what other kinds of experiences it inspires.