Yes, most of the passholders are blocked but they can pay the discounted price to get in and they will for the anniversary!! The Premium Passholders will be there to of course!!!! They also get discounts from the
Disneyland resort hotels and they will stay there for the anniversary. I was there for the 59th anniversary last year and they did that. The 17th is going to be like the 24 hour event I'm sure. It's going to be packed!!!! As for the rest of the week who knows? I was there the week Cars Land opened and it really wasn't bad a all. No one was at DL, we had the park to ourselves that week. Everyone was ad DCA.