I must say Rhino, that's a pretty damned good idea. Answers all of my questions I had (Why blue?, why bored?, why kids?).
so now we have 3 possibilities
1. Film shoot
2. exec families in park. Kids wait while meeting finishes
3. Uni. feedback group (my original idea)
Personally, I feel that since they are allowing those people to sample WWoHP, then most of the area is ready for the GP. I know for sure Hogsmeade is ready to be open. I'd say in around 5 days DC and FoTH should be ready, and FJ should be ready by the 18th at the latest.
I'd say softs should start sometime next week, just my gut feeling.
EDIT
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Up on Uni's official site, they now have a whole page about Filch's confiscated goods (according to the page there will be an on-ride photo that guests can purchase...cool!!!). Don't know if this is new or not...if so, then maybe it's a sign that everything is just about ready. click on Hogsmeade, and once inside, keep moving forward, u should run right into a clickable sign for it. Also appears they made nicer clickable signs and themed music for all the shops and restaurants inside including: The Owl Post, Ollivanders, Dervish and Bangs, 3 broomsticks, Zonkos, etc. CHECK IT OUT!!!