Snow White
Alice (in Wonderland)
Wendy (Peter Pan)
Cinderella
The character experiences are second to none. Characters seemed to be everywhere. And very able to spend time with EVERYONE. Never did we feel like we were rushed during our character interactions and came away feeling that it was the best character experience we had ever had. However, that being said, the variety of characters was diverse.
If I remember right, we saw
Mickey Mouse
Minnie Mouse
Donald Duck
Daisy Duck
Goofy
Pluto
Captain Hook
Smee
Dopey
Snow White
Alice (in Wonderland)
Wendy (Peter Pan)
Cinderella
Chip
Dale
Maybe someone else saw some others, but that's all I can remember.
The Princess Night had minimal interaction as it was a Photo Op but still our kids were amazed at the experience.
Do both if you are concerned about missing something.