It's just the difference in price. If you want to upgrade to regular dining plan which gets you 1 QS, 1 TS and 1 snack per person per night, it would cost $11 per person per night. If you want to upgrade to deluxe dining plan which has 3 meal credits per person per night to use how you want (TS or QS) and 2 snacks per day, it's $44 per person per night. Just subtract the QS cost. Not sure about children's costs or if there is any difference in tax with the package.