I'd pick Kona - EXCELLENT FOOD, smaller venue with less noise and commotion, great service, and closer to the MK. While I've enjoyed Spoodles, I feel it is crowded, noisy, and the food is good, but not exceptional (the olive/hummus appetizer is great and I yearn for the sangria though).
Since everyone here is so helpful and will offer differing opinions, I'd base the decision on where you are most likely to be before/after. Does a MK resort restaurant fit or does the Boardwalk? I'm sure you won't be disappointed with either, so I'd let location be the deciding factor.