The eligibility requirements for the Billions Christmas event have not been announced yet, but based on community discussions, it is unlikely to be as simple as just participating to receive rewards. According to the project's usual procedures, there are probably a few possibilities: reaching a certain point threshold, holding relevant NFTs, or having a specific Discord community role. The latest trend suggests that NFT holders will need to undergo dual verification with a specific role within the Discord. This mechanism can better filter active community members with actual engagement.