Some ideas for suvery questions:
1. What continents do you feel are the ones you stay away from?
2. What are your favortite territories to start from?
3. What is your most successful diplomatic maneuver?
4. When do you like to turn in your Risk cards, early or late?
5. Which type of player are you, aggressive, conservative, etc.?
6. Which type of Risk game do you like to play most? Star Wars, Transformers, 2210, classic, secret mission, etc.?