In reply to Hooo:
I agree that most of the comments saying don't ski off piste in January are rubbish, you just have to watch the weather and snow conditions and see how things develop. I've been touring in January quite safely with and without a guide you just have to pick safe terrain and slopes and understand what the snow pack is doing/has been doing leading up to when you go. Given that you are looking for a guide, they will do that bit for you so go for it.
Looks like there is quite a lot of accessible off piste from Alpe D'Huez so up high should be no issue finding some stuff to go at. Their own website has some info worth looking at and a link to guides:
https://www.alpedhueznet.com/ski-area/off-piste
Main thing to make sure is you have a shovel, transceiver and probe and know what you are doing with it - if you were in Cham you could hire that stuff easily not so sure about Alpe D'Huez. A guide might be able to provide kit for you. If you really want an adventure near there - drive to La Grave and hire a guide -
http://www.la-grave.com/winter/index.php. There are no pistes - it's awesome, and once you've experienced how great it is, you can sign up to help keep it that way,
https://www.indiegogo.com/projects/signal-de-la-grave-environment#/.
Last but not least, check out the BMG page if you want to talk to a British Mountain Guide about some off piste, someone might be prepared to take you -
http://www.bmg.org.uk/.
If you want to check out some of the off piste lines from the comfort of your sofa, download the FATMAP app - fatmap.com. Alpe D'Huez is one of the resorts available so might be worth a look.
And anything non-touring will be fine for your snowboarder as long as they can get down anything including mogul blacks - off piste is very different to those nice smooth groomers. Most importantly have fun
Post edited at 15:38