if you are going to get a 10% discount anyway at most places you eat with your
dvc/ap pass, then you need to spend $1500 before breaking even on the tiw, right? At this point the difference between the two options is the discount on alcohol, which can be significant after a few days at ts restaurants.
I have never considered the tiw as I don't eat often enough on property. One thing having that large discount may do is encourage me to try some of the onsite restaurants. a 20% discount makes the prices more palatable.