If your convention typically books a large number of hotel rooms, you can use this in your favour to negotiate a discount for function space. At 100 dollars a night, 200 room nights is $20,000 in potential income you are bringing the hotel. As such the hotel may be satisfied with an out-right discount to the function space cost.  
 
If your convention typically books a large number of hotel rooms, you can use this in your favour to negotiate a discount for function space. At 100 dollars a night, 200 room nights is $20,000 in potential income you are bringing the hotel. As such the hotel may be satisfied with an out-right discount to the function space cost.