Quite the contrary... remember back then there wasn't all the build up in Orlando either. Lets just leave it as you weren't there... and probably need to do some reading about it.
What I researched/found read was that a decent amount of hotels went up along with the building of the resort. I'm not saying Orlando was what it is now, but people weren't stupid. They built hotels, and quickly. Remember, Disney wasn't exactly built all in one day. There were just 492 rooms in the Polynesian...granted, that is a decent amount but hardly enough to house the visitors who came in that year. The Poly also cost $29-44 a night initially...yes I recognize 29 dollars back then doesn't mean the same as it does today, but still, relatively affordable. If your telling me all 50,000 visitors who visited the MK on Thanksgiving Day that year in 71' all stayed at the Poly and Contemporary...you have another thing coming. And many weren't staying for a week back then...it didn't make fiscal sense to, unlike now. Either way, my point being, Disney is becoming less accessible to the middle class as a whole, much less poorer people.
But anyways, at this point, that is off topic. That Ocean Express looks really interesting. I'm feeling more and more excited for this train ride, not to mention the (speculated) new Gringotts Bank Ride. Will be so curious to see what they do with that too. I hope we see the dragon! Not to mention they could do something with the every multiplying gold from the last movie.