Yes they are. In order to get a group discount you have to pay a full entrance  non refundable deposit for at least 10 people, paid at least 2 weeks in advance. For a closed booking we need the full deposit for at least 50 people 2 weeks in advance. The following is a break down of number of players required for discounts.

 

10 to 14: Group organizer gets free rental package.

15 to 24: Group organizer gets free rental package plus we take $5 off each players rental package.

Over 25 Group organizer gets free rental package, we will take $10 off each players rental package.