It has a lot to do with the 21 drinking age. Since getting alcohol is difficult without a fake ID or someone to buy it for you, you're dependent on what's at the party. Can't bring your own case of beer because you're 19 without a fake.
The host will get 1 or 2 kegs and make some jungle juice in a big cooler, again because they're probably under 21 so it's easier to buy only 2 types of alcohol
It has a lot to do with the 21 drinking age. Since getting alcohol is difficult without a fake ID or someone to buy it for you, you're dependent on what's at the party. Can't bring your own case of beer because you're 19 without a fake.
The host will get 1 or 2 kegs and make some jungle juice in a big cooler, again because they're probably under 21 so it's easier to buy only 2 types of alcohol
That makes sense