I’m doing it for the first time for my February visit - just the Dining Plan, not Deluxe. Mainly because my trip was going to be a cruise, but for various reasons I changed it to another date (and itinerary), and even including the Dining Plan, I came in less than I would have been paying for the cruise.
Regarding drinking more water at each meal, can you not get a bottle of water for the drink at QS meals? I was under the impression that you could - I specifically asked on another forum about getting a bottle of water at my resort’s food court with meals since I’ll have the refillable mug and was told that I could. Does that not apply if the mug isn’t usable (such as in the parks)?