This is true of any hotel. There's a certain average number you need to hit to turn a profit based on the cost of operating the property.
I believe Disney's hotel occupancy hovers around 80%...or has at least for the most part. Keep in mind Disney can adjust capacity by closing rooms or wings for refurbishment or if they don't think they need the space. We've also seen the trend in the last 10-15 years to convert rooms into DVC inventory.
What makes the Starcruiser unique is how tiny it is compared to every other on property hotel. This makes the experience more exclusive and easier to staff, though there are some experiences that require different skill sets because of the nature of the various shows.
Having said all that, I'd say anything less than a 70% average this soon after opening is probably below Disney's expectations. I'm sure they thought they could keep it at 90% or better for the first two years if for no other reason than the low total number of rooms and the initial hype.
Does that mean 25-30% [if that is true] would be unprofitable with lowered staffing? I can't say, but if [again, if], the numbers were that low 18 months after opening I would suspect there's probably a team of people reconsidering how they price and deliver these tours.
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