I'll offer a different view.
When we go and get the dining plan it is free - so I'm sure that affects my perspective on it. And we usually stay 8 nights...I have to honestly tell you that I am about restauranted out by day 5 or so - honestly the meals are so big and so much more than I usually eat - by the end of the trip I'm not even enjoying it much.
SO, dh and I have been tweaking our way of using it and next August we will be doing 2 or 3 two credit locations, specifically for the reason that we don't want 8 sit down meals.
Is it 'worth' it - heck yes, but again, it'll be free so anything we get is more than worth what we paid.
With 2 kids, 7 and 9 when we go - the dinner show (hoping to do Hoop de doo this time) will be entertaining - I'm not expecting 4 star cuisine. We might do LeCellier but since we know we love the food there - it will be worth it to us.