Amount of caps buried in the graves was increased to 100 000, max amount is 16 000, minimum is 200 caps and 20% of graves will be empty (there will be 50 graves in total).
Also, to clear things out: there is no looting of people after you killed them during gunfight. Instead, the stuff of killed people will be buried in random (not dug yet) graves after each gunfight. If any gunfight winner will find it in a grave he/she dug, he/she can keep it and use during next gunfight (if it's a better weapon etc). The winner of the tournament can keep all stuff he dug.
Remember all drugs/consumables ARE NOT ALLOWED inside event location.