You can't define culture at an off-site retreat. 

Culture is defined during the heat of battle. 

"Culture" is how a company behaves under stress. You see culture in the heat of battle. 

What happens when... 

• Pressure to perform increases? 
• Someone screws up?
• Results are disappointing? 
• Sharing bad news?
• Implementing an unpopular change? 
• People disagree? 
• A difficult decision needs made?