That is a great savings and it is awesome that the plan works for you! It works so well because the plan fits how you eat. For instance for my husband and I this would be a very typical day for us and you can see how it would not fit in well with any of the dining plans.
Breakfast: QS breakfast sandwich plus drink and a kids mickey waffle meal split between us (this would be covered but getting a kids meal would be a bad use of a credit, we could get a second adult meal but we don't need that much food, and it would cost more money than if we had gotten exactly what we wanted).
Lunch: In park lounge with a couple cocktails each and multiple shared appetizers or tapas type food (lounges are not covered by the dining plan so nothing here would be covered).
Dinner: Signature dinner, usually I would get an app and my husband would get an entree and we would split a bottle of wine (only my husband's entree would be covered on the regular dining plan, or entree and app if we did the deluxe plan, bottle of wine not covered anywhere on the
ddp). We generally don't eat desserts with dinner so that would be lost on us and we don't drink soda so we would just get glasses of water with our bottle of wine so we wouldn't even use the drink portion of the plan either, even if we did cocktails over the bottle of wine it still isn't making the plan worth it for us.
we usually get one snack a day to split, maybe a Starbucks drink two times over the course of a week long trip (these would be covered but we would have a ton of snack credits left).
You can see how the plan would not work for us unless we totally changed how and where we eat to conform. I will sometimes do the deluxe plan for one night if we have a split stay with a one night reservation for day one, (we can eat according to the deluxe plan for the two days it is active for a one night plan and be happy, but we cannot sustain it any longer than that without changing our habits too much and getting way more food than we would ever normally need or want). This is why I always suggest that people look at where they like to eat and how they like to eat for a specific trip before deciding if the plan fits for them, if it does, great, if not, that's fine too.