Whispering Canyon is definitely fun and offbeat and right in the lobby at the WL (where you will be touring at the time). However, it is definitely not great food. It is okay food, lots of it, tends to be decent, but you have to be into meat/bbq and some of it was cooked a little dry for our taste. That being said, we ate there at least 3 times when we stayed at WL because it was just so much fun. We way preferred it to Ohana's which is a similar fun restaurant at Poly.
Kona always gets great reviews. But, you'll be at Pucks that night. I'd go for the fun atmosphere at WCC over the food. Just don't eat at WCC if you hate meat/bbq.