This is correct no charge for UK package visitors until 2020. And we get special 14 days tickets, park hopping, water parks, golf, memory maker for $484 (when slightly discounted via UK ticket retailers). Disney UK have also been giving hefty discounts at Old Key West and Saratoga (sometimes at least 25% off rack) in addition to free dining nearly all year.
One downside, in school vacations it costs us $4500 just to fly to Orlando for family of 4.
Is the $484 per person for the entire trip? Wow, that's quite a deal Disney gives you.