We didn't eat at Ohana for breakfast as we did not want the character meal but we did eat at Kona at least twice. Wonderful food and very pleasant atmospere. They made the omelettes however we wanted them and my daughter - a french toast fiend - said it was awesome. It was easy to get into - we had no ADR's as we thought we would not want breakfast at a sitdown place - but halfway through the trip decided we were crazy and hungry for real food! My kids also loved the fresh grapefruit. We also loved dinner here.
Kona is consistantly some of the best food on property (and they have Kona coffee in a pressor pot). I recommend Kona, I'd be more comfortable solo there. If you do pick Kona, I love thier pinapple macadamia pancakes, VERY filling & VERY delicious.