I agree with this.
I've worked at 18+ clubs before, and they're a headache. On top of all the normal shit that we have to watch out for, now we have to make sure a bunch of people without wristbands or big black X's on their hands aren't drinking. There's only one of me and there's hundreds of them, so obviously I'm not going to catch them all.
And consider this: 21+ bars have their underaged kids in them, as all bars do. They might be 18, 19, or 20 and have a fake ID. We try to keep them out, but realistically, its just not possible to catch them all.
An 18+ place can have kids younger than that in there, if you can believe it. The crowd looks that much younger, and it wouldn't be totally unheard of to have a 15 year old kid slip in with their older siblings ID. At that point, it's only a matter of time before they get their hands on some booze and then pass out in the bathroom covered in their own puke. Then I get to wake them up and begin the process of figuring out who their friends are and how to get them home without them getting arrested.
And with all of the ridiculous laws that Athens-Clarke county has, can you believe that theres no law requiring a person to be a certain age to be inside of a bar? Only to drink, mind you. Door staff can get arrested for their missteps, we can't drink on the job, and we have to be a minimum of 21 years old, but its perfectly legal to let in a 16 year old girl as long as she doesn't drink.
I applaude Magnolias/Tasty World for going above and beyond to held get rid of the underaged crowd at their bar. I know I wouldn't want to deal with it.