What role does Ariel play in KHIII

Ariel does not exactly look like a mermaid in the next Kingdom Hearts game. That is to say, not only does she look like something that swims in the water, she seems to be made out of it as well? Also, she is apparently a summon.

KHI and II pretty much scraped whatever there was to be had from the first movie, and unless they want to age her a bit and have it be about Tara Strong’s character Melody… there really is nothing left for that world. My real question though… is she just a summon because she is Ariel, or is she a summon based on an attraction at one of their amusement parks? Sora in this game uses teacups and roller coaster as summons, and I think this is the first character based one we have seen in this game. Will there be more, or am I on to her representing something else in The Disney Amusement world? Who knows. KHIII comes out this year.