To be honest, the thread is only 19 posts long. It's not THAT big of a time requirement to read through the single page of posts...
But the bottom line is that if you have an Annual/Seasonal pass and you're not staying on-site, you're limited to a total of 7 days of active FP+ reservations at a time. You have to use or cancel a set to make FP+ choices on a different day.
If you *are* staying on-site, then you should theoretically be able to make FP+ for every day of your trip. If not, then a call to Tech Support might be required.
-Rob