I was in Tignes last week. The main pistes get chopped up pretty bad unless they have fresh snow during the night/day.
Expect lots of queues after 10am on most lifts, especially Ticot(?) as most of the ski schools/racers use that lift.
The park in the Tignes area is tiny and non of the features are scary (I was comfortable hitting everything switch).
Expect prices to raise by a stupid amount the week before and during Winter X.
Ski the "Fingers", probably some of the gnarliest lines this side of the pond.
That is all.