The former is apparently for Princess Meet and Greets, the latter is for the Frozen Village being created as this summers seasonal offering (similar to Anaheim with the stage show, Olaf M&G and snow play area).
Yes, and a third I believe.
I've got to give that award to Little Mermaid actually, they've basically done all of the above just at Disneyland Resort.
They have a segment in the Magical Mickey Map stage show, it's in Soundsational AND the upcoming Paint the nights. It's in World of Colour, !Fantasmic, has been involved in the fireworks, has a dark ride dedicated to it, a character dining restaurant and carousel. She's also snuck into Small World and Storybookland Canal boats?
Have I missed anything?
You forgot Turtle Talk in TDS... but as I outlined above, if it's less than 50% of the Mermaid penetrance, it definitely gets a pass.