I agree with you that handling of loaded firearms while under the influence is not generally a good idea and it is your camp so you get to make the rules and apparently others are completely willing to abide by your rules. That being said, your pictures of camp reminded me of church youth group I used to have to attend.
As for people who aren't capable of "self-governing", I used to be around a fair number of people who where unable to "self govern" when it came to alcohol. One of them left on a stretcher for the hospital with alcohol poisoning, something I doubt happened at your hunting camp.
I believe the biggest issue most have with 'rules' at hunt camp is you are dealing with adults, if you need rules to enjoy being with other people you know in the middle of nowhere then you probably shouldn't be with those people and if you feel like making a ton of arbitrary rules then you will likely be spending it with less people you know in the camp (some might consider that a good thing).