Our DD (4) has been lucky enough to have attended every party since she was born so she is now directing us what she doesn't want to miss. Of course, she can't decide what she wants to dress up as and wants to do costume changes throughout the night based on characters. (We've create a monster! ) There really isn't much to change around as there isn't much party specific merchandise. It may be one display per store that they may already have in the back and just roll out.