But you know this because you have 20,000+ posts on the Dis !Disney does provide the information that all rides and attractions are subject to availability. Assuming about anything is a bad idea. Assuming anything about your Disney trip is a really really really bad idea.
What I was saying is that when something seems obvious ie an ad that says words to the effect of " stay on property so that you have access to the parks for an hour before everyone else" would to most people mean they have access to all attractions an hour before. I cant imagine it would strike a newbie that they would need to "research" to find out that they do, well, sort of do, have access to some things, depending on, well maybe......
Once one knows how Disney operates, then yes I'd agree one should know to check out anything of interest because nothing is as it seems and one cant rely on the website for very much, but for the uninitiated I expect that the op's error is often repeated and often frustrating.