I believe these two things are true (please correct me if I am wrong):
-kids under 3 years old do not need a FP+
-fast passes are generally harder to get the larger your party
However, it looks like Disney still allows you to select guests under 3 when making FP selections (I am not at my window yet so again let me know if I’m wrong).
Why? Is there any advantage to including someone under 3 in a FP reservation? What am I missing?