What a wonderful way to celebrate Father's Day! Walt Disney built his parks so that families could spend time together and he would love this idea.
While there are not "official" specials, you may find some extra magic at restaurants, a Happy Father's Day greeting or other pixie dust for the dad in your life.
While tickets are available at the Disney Store, they are the same price as the parks. For discounts, look at Undercover Tourist, AAA or deals through your employer.
When you purchase tickets, you receive a hard plastic card. This card can be changed to a MagicBand for free if you are staying at a Walt Disney World Resort. You can also purchase a special MagicBand if you are staying off property or you want to have a special one.
FastPass+ are available to all guests. If you are staying at a Walt Disney World Resort, you can book your FastPass+ 60 days prior to your arrival. If you are not staying on property, you can book your FastPass+ 30 days in advance.