We drove through the tunnel to Courmayeur, on Easter Monday, to avoid the crowds as half of France seemed to be arriving in Argentierre, which was overcrowded that day.
Our Mont Blanc Unlimited lift pass gave us access to Courmayeur, Verbier, etc, and a half price return ticket throughout the tunnel for 27 euros. April snow meant the lower pistes were beginning to show some bare patches, but the top was great and the cloudless day meant fantastic views of Monte Bianco. Felt like motorway skiing after Argentierre, with hardly any queues apart from the final cable car, which was at least 50 years old!
Food and service, on the mountain, was very good and much less expensive than in France.
I will definitely return to Courmayeur, although not sure if a whole week would be worthwhile.