Quote ="wire-quin"Does it matter where you train?'"
I think it does, experience and memory from playing and training on the same ground should help develop a much better knowledge of any quirks and how to exploit them.
I would also think it helps if your constantly practicing attacking / defensive drills, kicks or any other game plan stuff on the ground you'll need to execute them on, also perhaps helps to understand the impact of differing weather conditions.
Granted it would be a small advantage but an advantage nonetheless.