Well I'd say this pretty much  confirms the vip preview date of June 23rd.  If you go to the sweepstakes site and read through the rules. Part 7 prize conditions/restrictions  say  trip must be taken between June 22nd June 25th. Unless changed  by trip provider. Which I guess allows them to be flexible due to any delays.  Now my only question is, not knowing a lot about the soft opening of new rides. What is the likelihood that I would stumble upon one during the week of June 12 - 18th. Which would be right before the vip event.