Tinker Bell is one of the characters you can unlock in Disney Magic Kingdoms! She can be unlocked by logging into the game for 5 days and collecting your reward. All you have to do is log in once a day (24 hours after you last logged in) and claim your daily reward. You do not have to log in for 5 straight (consecutive) days, you just have to log in for 5 days in total. Once you do that, you will be prompted with Tinker Bell on your 5th day. Once you collect her, you will also get a gem bonus from collecting all of the Peter Pan characters (she is currently the only Peter Pan Character.) You can now follow through with Tinker Bell's quests and get some more gems and potions!