Guardians first, Test Track second, then keep moving
Guardians of the Galaxy: Cosmic Rewind runs long all day and peaks in the evening, so unless you bought its Single Pass, it's the first standby line of the morning. Test Track is right next door and climbs once the park fills, so it's the second stop, not an afterthought. By the time you reach Soarin' Across America and Spaceship Earth, Soarin' has hit its afternoon plateau and Spaceship Earth its small late-morning bump. Neither climbs from there, so bank them on your way to World Showcase.