I don't care where we fight quite honestly. A good writer can make good use of any obstacle. Seeing as we are, for the most part, quite exceptional writers; we should be able to make exceptional use of any obstacle. Applying slight boundaries that require you to bend your creativity is some of the most fun you can have in composing a fantastic story. I say let a third party choose and describe the scenic locale. Keep everything on an even playing field. Regardless, this should make for an interesting match, no matter how things happen to unfold.