Hi there, Jordan!
If I understand you correctly, you will be staying at the Walt Disney World Resort for six days and have a 4-day Park Hopper Ticket which you only plan on using for four of the days because the other two you will not be visiting any parks. Phew! That can be a little confusing!
If the recap I gave above is correct, then no, there is no need to purchase additional
park tickets because you will only be using the tickets for four days, not six. Only entering the parks will use a traditional ticket day, not just being at the Walt Disney World Resort or entering the ESPN Wide World of Sports Complex (usually, and that can require additional admission.) Now, because you are participating in a competition it may be a little different and I'd definitely check with the competition sponsors as well to make sure. Lastly, if they are Park Hopper Plus tickets, you'll have same day admission to all four theme parks
plus you get four visits to additional Disney fun like the water parks or admissions to the ESPN Wide World of Sports Complex.
I hope I've cleared things up for you and not just confused you more. Please let me know, Jordan, and feel free to reach out to any of us if there is anything else we are able to assist you with.
Magical Wishes and Good Luck,
Lauren