Two meals at $10 each, plus two snacks at $5 each, plus the mug amortized over the number of nights = value, aka getting more than what you paid.
adult lunch at BOG: $16* entree + $10 drink, plus adult dinner at WPE $15* + drink $4, plus two $5 snacks plus the $18 out divided by nights** = value, aka getting more than what you paid. And the QSDDP includes tax.
$18.99 plus tax
It's clear you don't feel the plan is a good value for you, and that's absolutely fine.
*Not the most expensive menu item at either location
**fewer nights, better value.