dont do it, you will regret it. Other riding out there is so much better, much quieter, awesome trails and weather pretty much guaranteed to be better. Also, breaking bumps, i say no more.
We stopped off for two days in the PDS two years back on a 2 week road trip and it was by a long shot the worst riding we experianced, even worse than places like val’disere which we knew nothing about.
If you are driving then do it, if going guided then just choose another company somewhere else, i.e. les arcs.
You wont regret it i assure you.
Drop me an email and i will email you an account of where we have been and how to get a free day riding in in the alsace if you are driving down and back!