We just ate at Kona last week and it was the best meal of our trip! If you are going to be at MK all day long I would say go for it. You will be happy for a little break in the middle of the day and it doesn't take that long to hop on the monorail. I do suggest trying to get on the monorail about an hour before because both times we took the monorail to the Poly around dinner they were switching tracks so it took awhile.