So unlike your normal reception hall where there's a bar and they provide your drinks, we are doing it all ourselves. We are doing a boatload of beer which will have beer soda and waters, but want to make mixed drinks also. I found the glass drink dispensers I want to make 3 different mixed drinks so my question is how much do we need of each drink. We have a max of 120 which is mostly family so we are expecting most of them there I was thinking make 3 gallons of each? The group will probably be split between the beer and mixed drinks so I just want there to be enough any ideas?