I guess I can see that - especially when it's hot, sunny, and you're out walking around all the time. I tend to be more thirsty than hungry at those times of the year.
What we're doing is a "snack" for breakfast (or after dinner treat - dole whip), counter service for lunch on the early side (maybe 11) then leaving the park and going back to the resort for a couple hours to chill - literally. It's swelteringly hot and humid that time of day, so we'll probably go back and swim, then nap. Then we will shower and get dressed for dinner, and have some sort of TS meal in the evening - maybe around 6. That way after the meal it will be close to sunset, and then we can enjoy the parade or fireworks or whatever evening show is around with the heat toned down a bit.
Now, if you just straight up don't want the meals, you can alwasy use 2 credits for California Grill - oh my - to DIE FOR! Or, Hoop De Doo or whatever. And you can alwasy do one or two character breakfasts, if you want.
Personally, I'm not big on the splitting meals thing. I feel like it's an inconvenience to the staff (I know, I know, disney magic - and all that) but I still feel weird doing it. Most TS restaurants have lighter fare, if you don't want a heavy meal. I can always go for a steak and risotto, myself. But you could just as easily get an entree salad and have your companion get an entree and go halvsies. (And I wouldn't hesitate to say "no thank you" for dessert or have it wrapped to go, if you have something that's non-perishable.)