We had a great time. Avoriaz got quite busy in places and we found the Swiss side round Les Crosets and Morgins was much quieter but you will need a full Portes du Soleil area lift pass to do that but it's worth it.
Avoriaz is a superb ski area, you’ll have lots of fun. Watch the snow situation down in Morzine, if it’s poor expect Avoriaz to be busy as everyone will head up the mountain, if it’s good you can do a fantastic loop around the whole PDS area. Once up in the mountain there is plenty of skiing to do. Enjoy.
I live there, for such a big resort "there aren't many people". If you go to the coast of Chavanette or Conche there are much fewer people than Avoriaz center. Looking at the quality of the snow on the Avoriaz site, it always corresponds to reality. During a powder day in May I was even able to ski alone on the slopes for almost an hour
