If you have an upcoming Walt Disney World vacation or are a local considering annual passes, you might want to consider purchasing your theme park tickets before Aug. 1. For the past four years, Disney has raised ticket prices on the first Sunday in August. Such hikes usually aren’t announced in advance, so once you hear about it, it’s too late to take advantage of the current rates. Premium, annual and seasonal passholders who renew before Aug. 31 will receive 15 months instead of 12 months. Plus, passholders get a discount for renewing up to 30 days before or after their tickets’ expiration date.