It’s not just vloggers though. I used to work for a company that booked conventions into Orlando. There was a steady stream of perks coming from theme parks, restaurants, and other venues. We received these on a regular basis from companies hoping we would promote their company to our customers over their competitors. Disney hopes that the Disney vloggers will be interesting and compelling enough to cause a customer coming to Orlando to visit other parks. It’s in Disney’s best interest to , and if that means having preview events or providing other perks for vloggers, then that’s what they’ll do. They have entire departments devoted just to marketing through third parties.