Here are two quick concepts I created to demonstrate the look and feel for either of the two settings. Personally I do not have a preference, and it really does depend on which will be "easier" to accomplish. The problem I have with setting the environment in snow (although it would look awesome) is how much tougher creating the snow would be. I would want it to contain the shine and feel that snow truly has, and at our current stage I really do not believe this to be possible. As a group we are I believe siding more with sand, but we've still got to give it a lot of consideration.