Personally, I prefer to use most of my FPs in Fantasyland and then rope drop everything else. The vast majority of the people at rope drop will be going straight to Fantasyland, so if you veer off toward Tomorrowland or Adventureland you can hit the major attractions everywhere else in the park in the first hour. I usually do FPs for PP, SDMT, and Splash and then in the first hour after rope drop I'll do Space Mountain, Buzz Lightyear, Jungle Cruise, Pirates of the Caribbean, Big Thunder Mountain Railroad, and Haunted Mansion so that I get all the heavy hitters out of the way while everyone else is busy in Fantasyland.