I don't think the lack of kitchenette would bother me. We don't cook (we get breakfast/snacks from Gaspy's before heading out, haven't ordered groceries since 2018), and leftovers are rare. I think I used a microwave once in all my trips to Disney, no one in my family drinks coffee, and I didn't even know the rooms came with a toaster??
As long as we have somewhere to keep beverages cooler than our body temperature, we should be good.
I'll miss having the separate sink I suppose. I sometimes brushed my teeth or washed my hands there when the bathroom one was occupied. But waiting 5 minutes for someone else to finish brushing their teeth is a hardship I can live with.
However, I say this now, as a purely academic consideration. Will be interesting to see how the first stay goes. We're booked in a resort studio for July 1 and July 2. This could end up being our go-to resort and room choice because of the second queen bed. My 6 year old is already calling dibs on which bed she wants and she is thrilled that she doesn't have to sleep on a pull down/murphy/sofa bed for this trip. But maybe I'll find it strange not to have the kitchenette that I'm so used to seeing, even if we underutilize it.