Weather would be typical summer day on East Coast of U.S..
Space is available to write in your preferred brand of Beer.
For the wines, please just mention a type such as Pinot or Chardonnay for the white wine and maybe Merlot or another type of red next to the red wine.
This assumes everyone would also like a non alcoholic beverage throughout the picnic, but we're mainly looking for what adult beverage, if any, you would consume in that scenario.