I don't think Ariel has a storytime. She has a Grotto where you can meet her, get an autograph, and have a picture taken in Magic Kingdom (just past Dumbo in Fantasyland). And in Disney Studios she has a stage show with some live action mixed with puppetry and film. It's pretty good. My 5 year old niece loves it. She sings all the songs as loud as she can - LOL. Sorry if you sat near us.
Shelly