We had fridge and microwave in our rooms at yacht club and polysisan resort; both worked great for reheating food.
Imo, full kitchen is bit overkill for us because we were out at the parks for dinner reservations. It was breakfast we would eat in our room with cereal, milk, fruit granola bars, yogurt, all those can be ordered istna cart like your DH suggested. That worked really well for us. Lunch we usually used quick service or back at hotel by pool service.
We loved yacht club resort cuz of their amazing pool, walkable proximity to Epcot and downtown Disney by boat. We also had best views from beach at resort to watch illuminated water show and fireworks.
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