If they could keep it at 90% capacity for years and years, sure. Not being able to get it past 90% capacity in the first few months of opening probably would be devastating considering what it is, especially since that would indicate they're unlikely to be able to keep it at or above 90% long-term. Some of that will depend on early reviews, though -- if people love it and that leads to more bookings going forward, it's not going to matter too much if it wasn't sold out when it first opened.
It's the kind of thing that could hurt their stock price because investors would see it as a massive failure. Overall revenue is mostly irrelevant if it's short of projections.
I wonder what the daily operational costs are. They have to be very high if this is going to be the kind of experience they're promising.