Revealing mistake: When Tenderheart is flying through the carnival in his rainbow roller, take a good look at the background going by. After "In a Care Bear Family" plays, the camera pans a scene of the carnival once again. If something looks familiar, this is because the same exact background is used twice throughout the movie. Note the 'Joe's Antiques' truck, which is only relevant to a scene in the beginning when Fetuccini's magic trunk is delivered.
Revealing mistake: As the scene changes over from Fetuccini and Nicholas gathering cards to the inauguration ceremony, look very closely at the Care Bear Cousins (seated at the table's left side). Some of them, such as Swift Heart Rabbit and Playful Heart Monkey, already have tummy symbols - which are supposed to be awarded by Tenderheart several moments later.