too many bouncy castles?

Yesterday we dropped $5.00 for an all you can jump bouncy castle. Sophie lasted for all of 4 minutes, at most. We went back today. I thought yesterday was surely a fluke. Who can resist bouncy castles? Apparently my daughter. The second time around she lasted about 8 minutes after I carried her from castle to castle to keep her jumping. Mike thinks that maybe she's had so many bouncy castles in her life already that they've lost their magic. I think he's right.