Kent Phillips/Disney

You wouldn’t even just walk up to a movie theater and buy a ticket day-of anymore, so why would you go to one of the most popular tourist destinations in America and do that very thing? Tickets to any of the four Walt Disney World theme parks are expensive enough when you buy them in advance, but that price only increases when you buy them on the day. If you know you’re going to Disney World, buy your tickets as soon as you can, either via Disney’s official website or via a third-party ticket vendor (like Undercover Tourist).