I think that I also read at one point that they might bring you something off the menu from Kona Cafe, but I couldn't find this information again when I did a search.
BTW...we decided not to eat at O'hanas for our upcoming trip. I had an ADR and ended up canceling it and getting one for Kona Cafe instead. It seems like everyone loves Kona Cafe. I think that the atmosphere at O'hanas would be really fun though....