Another thing to consider is when at World Showcase, both of you don't have to eat at the same place. You can each get your own meal and then sit down at the last place you visit. For example - when my son was with us, he wanted the nachos from Mexico, I wanted the pot stickers and egg rolls from China, and my husband wanted a burger from America. So, the son got his nachos and carried the tray out and we all walked to China where I got my stuff and then we all walked to America and sat outside while my husband went in for his burger.
On another trip, we were eating outside at America (again) but it was just the two of us. We were next to a couple of people who were assembling about four tables and chairs up for what appeared to be a large group. We overheard them talking and saying "this person was going here and that person was going there, etc." It turned out to be about 13 people in total and we found out each person had an assigned country and went to get at least one dish for it (or beverages or desserts). Then they all brought their food back to America (yes, they did buy things from inside) and shared everything. It was like a perfect counter service meal served buffet style.
On another trip, we were eating outside at America (again) but it was just the two of us. We were next to a couple of people who were assembling about four tables and chairs up for what appeared to be a large group. We overheard them talking and saying "this person was going here and that person was going there, etc." It turned out to be about 13 people in total and we found out each person had an assigned country and went to get at least one dish for it (or beverages or desserts). Then they all brought their food back to America (yes, they did buy things from inside) and shared everything. It was like a perfect counter service meal served buffet style.

The new CS Harambe Market in AK (near the safari & Tusker House) has a rib platter that is gigantic. DH said he would order the kids size one if he ever went again. But that's plenty to share too. Pizzafari changed their menu so we didn't go there this last time (they removed a sandwich I used to always get) but they still have individual pizzas you could share if you're not super hungry.