Hi, Karen!
Cirque du Soleil -- which performs in various venues throughout the world -- usually keeps the same show, music and general acts in the same location. Sometimes, an act will be swapped or added based on personnel changes. However, chances are, you will see the same general performance of
Cirque du Soliel's La Nouba this year as you did five years ago at Downtown Disney.
However, if you're bringing along a different crowd (and since it was a while ago since you saw it), you may be surprised at how different the show may feel. It is an investment of time and the vacation budget...so plan accordingly. Yet, I saw it about 8 years ago and can't wait to bring my kids who weren't really old enough to appreciate it then.
I hope I've helped you make a decision, and please let me know if I can answer other questions which may pop into your head -- especially
Disney Cruise Questions. That's sort of my specialty! Yet, if I don't "see" you again before your trip, have a wonderful day and a magical vacation!
Andi