I'm hopping on the "if your are a first timer, don't purposefully skip anything just because other people told you
they don't like it." Your DD's age, likes and dislikes will play a lot into what you end up doing and I think with two days, even if you did a half day each day, you should come close to doing most rides/shows. Everyone enjoys different things. I've noticed that sometimes on this forum people can be real downers about things, lol. See what looks most fun and go for it; if you don't think you or DD will like it, then move on! Some of the things people aren't hyped about are part of my best memories, so you never know!
A few tips for MK:
Dumbo, Magic Carpets and the Astro Orbiter are basically the same ride. I would not suggest riding all of them unless your daughter just really wants to. My personal pick would be Astro Orbitor especially if you're going to be there when it gets a bit dark and Tomorrowland is lit up. If she's afraid of heights, hit up Dumbo or the Carpets instead.
Unlike most people, I don't hate Stitch's Great Escape. I actually like it a lot; it's cute. The first time I went it on it was when it was still Alien Encounter, though. I was older than 5, maybe around 10, and I didn't think it was scary. The change to Stitch has made it less scary in some ways, but it can still give people those jump scares. Whether you opt to do this or not depends on if your daughter scares easily and what will frighten her. I wouldn't put it a "definitely skip" list, but I would take her age into consideration. (Dark room, bar on shoulders to simulate Stitch bouncing/moving and some loud sounds. This is basically a show.)
Similar situation with PhilharMagic. You sit in a loud theater and 3D elements come flying at you. I have a blast, but younger children may get scared. She may think it's super fun, though! I'm sure you know her well enough to be able to tell.
Tom Sawyer Island can be kind of a time sink, but my family has pictures of 5-6 year old me having the time of my life. It's not great as an adult, in my opinion, but your DD might enjoy it.
Any show where you are in an air conditioned room sitting will feel like a blessing on a hot Florida day, don't forget that!
Also, I know FPs make it so that sometimes people end up running from one side of the park to another. I have a "route" so I planned ahead and choose appropriate times for mine, but not everyone has that luxury. Nevertheless, I'm a fan of doing everything you can in a land before moving to the next. It helps cut down on needlessly crossing the park.