Although I have not been on either one, we are trying to book an Illuminations cruise. Our theory is that Illuminations is actually over the water so being on the boat is perfect. While Wishes on a boat would be neat, It centers around Cinderellas castle, and there is no water for a boat to get right under. You can get the audio piped in for an extra fee, but I just think the Illuminations cruise will be more "right in the action."