she is also 23 and we love DDP (helps of course that we get it free!). We share a breakfast CS in the morning (I go get it while she finishes dressing). they are plenty for 2 and come with 2 drinks so she can have juice or water while I have coffee. This time, there is a coffee maker in the room so we'll probably get water to take to the park. Then we also split a CS lunch. We then both get our own TS dinner. Snacks are usually shared too. This keeps us happy but not stuffed. We usually have a couple of CS left on the last day and we grab stuff to go for the wait at the airport. Sometimes the CMs at the food court will let you get, for example, 3 snack items for 1 CS to use them up, not always but ...
I know we could not eat the way we enjoy for less than $38 each per day. I totalled our receipts from last year's trip and, for 7n/8d we "spent" about $800. I don't mind making ADRs and we would do a TS each day either way, never felt tied down or that the ADRs were ruling the trip.