they actually do summer camps down there at Liberty.
Never been, though.
A friend of mine has some Powderpak which we have used a few times now. I think Liberty uses Snoflex (or Snowflex?) essentially the same concept but IDK how they compare.
On the powderpak, at least, edging is different you really can't "carve" or lay an edge like you would on snow. You can kind of side slip though. ALso I remember reading about the dryslope over in the UK and they said the same thing - for instance that you can't really do a setup carve on the kickers or rail approaches.
Never been there but thought about making the trip. But yeah the material is completely different than snow. When you arrive they make you take a brief lesson on how the material works and how to ride on it. I believe they also check your skill level and depending on that they allow you into the terrain park. These are just things I've heard cool concept and worth it if you live near by. But I don't think its worth travelling to.