MAJOR RULES:  

• Open substitutions at referee discretion on any stoppage - referee DISCRETION to give PERMISSION. 
   
• If a player is red carded the team has the option to remain at full strength.  This is in accord with the spirit of a SHOWCASE event for the athletes.
   
• Game lengths are 2x40 min halves w/ 5 min halftime.  Teams are allowed to request shortened durations but both coaches must agree and communicate simultaneous with the center referee.