Yes, they do have alternatives, but beware. Back "in the old days", they used to only charge you the cost of the alternative meal (because it just comes from Kona Cafe next door) instead of the all-you-can-eat price. Well, the last time that we went to 'Ohana, our DD ordered a hot dog, since we knew she wouldn't eat the rest of the offerings. Well, when we checked out, they charged us the full price. We questioned and they said, oh no, it's all-you-can-eat hot dogs too, so you're charged the same price. We were actually told that they knew that people didn't like it, and some customers have ordered to-go stuff from next door or the counter service at the Poly because it was 1/2 the price.
Just to let you know.