Plot hole: When Tinkerbell tries to find Gruff in winter, she's seen flying with her wings out of her coat; in a later scene, Fawn flies too. After Tink finds Gruff, her wings disappear from underneath her coat. This is a plothole because of how the whole storyline of Secret of the Wings was that warm fairies can't fly in winter weather or their wings will tear.
Suggested correction: Yeah but at the end of Secret of the Wings, they find a way to let any fairy fly in winter.
Trivia: The baby that laughs at the beginning of the movie and the little girl that Tinkerbell brings the lost toy at the end of movie is the same little girl. She is Wendy Darling from Pete Pan.
Suggested correction: Tinker Bell is born just before spring and then when spring arrives she brings the music box, so the baby can't be Wendy because it was only a few weeks at most.
If I'm correct, time in Neverland runs differently then on the main land.