blizzard beach has a lovely area called tykes peak, right at the top of the peak there is a tiny little area for teenie babys, it's just a couple of inches to splash in, and some very little slides (where you would hold baby and slide her down)
Typhoon Lagoon also has a kids area with sand and a little river running through it - it would also be good for teenies, but there are lots of thigns that splash water around and my dd has never liked getting splashed in the face, so it didn't work so well for us.
Bev