I am trying to estimate how much to buy for my at home, outdoor July reception. It is a very casual affair with cook-out style catered meal. 60 attending but that includes 2 photographers, the DJ, and officiant who will not be drinking alcohol. I estimate a total of 15 non-alcohol drinkers. We will have bottled water, cola, diet cola, non-cola, and beer. Also, is it too chintzy to just go with a basic beer like Michelob or Budweiser in a regular and light version? With so many tap rooms and craft beers available, what's a tolerable, affordable beer ?