We're doing DxDP on our trip next week and like several other posters above, we're using it to do signature dinners and spread 5 nights worth of meals over 6 days (arrival day at 10am and departure day not until 6pm). It will be me, DH, DD13 and DD11. Both girls are disney adults. DD13 eats like a typical teenager, ie more than DH. DD11 doesn't eat much quantity-wise but is a foodie and LOVES all kinds of sophisticated foods. This is our plan with credits used in parenthesis:
Arrival day: Yak & Yeti lunch (4), Boma dinner (4)
Day 2: Crystal Palace lunch (4), CRT dinner (8)
Day 3: Epcot CS lunch (4), Cali Grill dinner (6) - DD11 will share with me or we'll pay OOP for a kids meal for her
Day 4: Wolfgang Puck lunch (4), Yachtsman Steakhouse dinner (6) - again DD11 sharing or more likely ordering fish or chicken off the kids menu. She hates steak

Day 5: CS lunch (4), Room service dinner (6) - pizza for kids and menu for adults
Departure Day: Late Boma breakfast (4), Tusker House dinner or "picnic in the park" to eat at the airport (4)
Total 58 credits of 60 available. This leaves us 2 extra credits to fill in or something. DD11 and I aren't breakfast eaters and DH and DD13 will just use snack credits mostly for breakfasts and to fill in for the unlikely situation that we're hungry between meals.
Spread out this way, it doesn't seem like an overwhelmingly large amount of food. I'm looking forward to having everything (except tip and EtOH) paid for in advance.