Teams are required to be available for CSGO

Teams will be allowed to use a sub to replace another player twice per season, but replacements must be declared before plane tickets are issued.

Teams are required to be available for photo and video shooting on the Monday preceding their match days. Exact details of the photo and video shooting schedule will be delivered to teams prior to their arrival."
"Each team and player will be required to use their official FaceIT account (or create one prior to the commencement of tournament play)." 
The code of conduct appears to be standard as well, no messing with the equipment mid-match, no engaging in unsportsmanlike behavior. That includes taunting, physical behavior, throwing, teasing etc.

Here it is M4A1-S Skins:http://www.csgosk.com/
Here it is M4A4 Skins:http://www.csgosk.com/