Because it is actually July 17 contrary to what some may try to claim. July 17 is the date people were invited to, July 18 is the date that the park opened to the public.
Actually I would disagree. A theme park had to be birthed because it comes from someone's imagination. It goes from conception, where it grows, to being birthed when its released into the world. So in a sense it is a living thing because an idea is a living thing.Theme parks are not birthed. They are not living things.
Sorry but my iPhone wasn't "birthed" by your definition. I consider it more of an anniversary.Actually I would disagree. A theme park had to be birthed because it comes from someone's imagination. It goes from conception, where it grows, to being birthed when its released into the world. So in a sense it is a living thing because an idea is a living thing.
Reading the police log. I hope Detective Jack Koontz captured the three escaped juveniles from Juvenile Hall. They probably just went to Disneyland. Looks like the police had a lot of trouble with juveniles shoplifting and vandalism of schools back then.
People are invited to new attractions and parks before they open to the public all the time, especially for media purposes. But Disneyland is the only case I can think of where the opening date listed isn't the first day it was open to the public but instead an invitation only event. I suspect it's partly because Disney loves the stories of how bad Disneyland's opening day was and the excellent story and marketing it provides.
Star Wars Land opened on May 31st, 2019. But on May 28th-30th they had a series of invited previews and premiere parties that the public wasn't invited to. They had the big celebrity opening ceremony and party on May 30th.
Cars Land opened on June 15th, 2012. But in the days leading up to June 15th they had invited previews and a big splashy premiere party on June 14th that the public wasn't invited to.
I get a real kick out of @Darkbeer1 and his passion for this topic. Like most Disneyland fans, I had been using July 17th as the "opening date" for Disneyland for many years. Through the archival material and clear evidence Darkbeer provides, it's now obvious that for at least the first 10 years Walt and his team at Disneyland considered July 18th to be "opening day".
A fun quirk of history how it changed and how Disney itself reclaimed July 17th as the opening. If I were to guess, the change would have traced back to the anniversary TV specials in the 1980's where the celebrity hosts would talk wistfully of the disaster of opening day, ladies heels sinking into the wet pavement, etc.
But before then, the mess on July 17th would have been fresh and embarrassing memories for Walt and his team in the 1960's, so the accurate date of July 18th was used and July 17th was conveniently forgotten.