The famous fairy from Neverland can be found just inside the Magic Kingdom. She meets inside the Town Square Theater, the same building as Mickey Mouse. Guest are shrunk down to fairy size before entering the meeting area; there are twinkling lights on the walls that appear to be fairy dust which is super fun for the little ones. Upon entering be sure to check out all the lost things that Tink has gathered here like playing cards and a tea cup.
This character greeting does have a fastpass option so if she is on your must see list you can use one of your fastpasses to skip the line if it’s a busy time of year. Check your times guide near the park maps or on the My Disney Experience app to see when she will be available. Since she is inside she should be around most of the day.