yeah, i got a strong feeling the dog is overwhelmed with how many people just popped into its life and didn't really have a chance to acclimate to so many strangers just showing up, especially when people instinctively try to go and pet the dog while its probably nervous about it. usually this is gradual thing you do with dogs, they can get stressed pretty easily when in new environments. it's a lot of stuff that can be happening though, just not a good sign if a dog is biting people like this