You don't define "early in the day." Perhaps it should be more precise. I advise schedule late moring (10am) to early afternoon (3pm). You'll still have chances to book FP for late afternoon and evenings.
Pick the most popular attractions (must-sees). Otherwise you'll be disappointed if you could not see your preferred attractions. I know this is very hard for some people, but you will know which 3 attractions. Not everyone can arrive at the park upon opening. Even if you do hit the park in the morning, try to hit the most popular rides for a non-reserved FP attracted to ensure you get the most out of your day.
I seen Anna and Elsa with FP+. I highly advise you get your FP+ early or you'll miss out.
Even Maelstrom was rather tame. and Test Track is literally a fast car ride.Maybe its a capacity issue. But Living with the Land in tier 1 is an absolute joke. That was a great ride, with the best food court and a short line. Its educational, fun and relaxing. But I find it ridiculous to equate that experience with Illuminations, Soarin, or Test Track.
Why do we need 4 tier 1 rides anyway? Why provide us with more options that we can't experience? Sure, bump Maelstrom down, but why move Living with the Land?
I find it interesting that Tower of Terror is not a tier one ride like the Hannah Montana Rockin' Roller Coaster. That's a good thing though, strategy-wise when it comes to fast passes.
Speaking of strategies, so help me that a family of five walks into a single rider queue like the Rockin' Roller Coaster and then complains that their party is going to be separated whenever they reach the train station. Happens every time to me and somehow, a cast member bends the rules for them. Boo!