The complex itself is very accessible, there are paths all round that wheelchair users are able to take advantage of, these take you through the woods to see the different wildlife around the area.
The outdoor activities were very accessible too:
New Year 2007 Center Parcs at Winfell Forest
Center Parcs New Year 2009/10
This was the year that the snow didn't stop falling, so that made for an interesting few days trying to get around in a wheelchair!
New Year 2013/14 up in Winfell Forest again:
Center Parcs July 2014