As a young adult Alpe Dhuez offers a lot with the variety of runs to make any amount of stay enjoyable.
It also has a lot of budget friendly options with accommodation and food - considering where you are it isnt as extortionate as other places/ as you could expect. It has cheaper sandwich and McDonalds options if you want it!
I also enjoyed the bars and Après ski - we spent some time at Stiefs which is open late with good music and beers but there are a lot of cheaper places with DJs and good atmosphere.