Hello Christina!
Welcome to the Disney Parks Moms Panel!
FastPass+ is such an amazing service that is already included with park admission. Having the opportunity to select in advance a special time to enjoy up to 3 attractions per day at a theme park is the best way to maximize your visit.
If you were able to make FastPass+ selections for popular attractions such as Avatar Flight of Passage, Seven Dwarfs Mine Train, Frozen Ever After, and Toy Story Mania! then I highly recommend keeping them. I have many friends who simply cannot find a FastPass+ for some of these attractions (especially Avatar Flight of Passage) so enjoy them!
Instead of arriving early, you can always try to modify your FastPass+ selections. Many times Guests change plans or simply cancel a selection so you need to constantly check the
My Disney Experience mobile app for updates. Of course you are more than welcome to arrive early at the parks and try to go straight to these attractions. If you are successful and decide that the wait time does not bother you, after riding you can decide to change your FastPass+ selections and choose other attractions.
I hope this helps you while planning, Christina! Thank you for stopping by the Disney Parks Moms Panel.
Best magical wishes,
Thiana