We have only been once so far for a 7 day trip, and probably only experienced 20% or less of the parks, but my 2 year old's favourite things were:
- Festival of the Lion King (saw it 5 times in a 7 day trip) - not sure if you already have AK planned out or if you're planning to skip it altogether, but this was our favourite park by far
- Beauty and the Beast (show at Hollywood Studios - surprisingly long attention span!)
- Frozen Sing-along (she's never seen the movie but loved it anyway)
- DinoLand dance party (doesn't require FP+), AK
- Parade at MK ~2PM (doesn't require FP+)
- Character dining (1900 Park Fare dinner, CRT, Tusker House) - I told her she was a princess for that meal (she wore a princess dress bought beforehand from the
Disney Store at home) and that the other princesses/characters were coming by to say "hi" to her. She felt very special and was willing to sit still and wait for them to come to her. Best part for me is that the buffet is free for the 2 year old eating off my plate!
We used at least one FP+ every day on meeting Minnie/Mickey and lined up for the other characters that don't offer FP+. The pink dress Minnie and wizard Mickey at HS were big hits.
We did a few rides but none of those made much of an impression on her and she doesn't ask to go on them again the way she wants to see "baby lion show", "belle show", and "elsa show".
I think overall as long as you are flexible and don't mind adjusting your plans once you get there just in case Plan A doesn't go according to schedule, you and your daughter will both have an amazing time. Enjoy!!!