This Sunday, Carroll Gardens institution Frankie’s is opening up its lovely backyard space for its annual Oktoberfest party, which is a very civilized way to spend an afternoon drinking German beer and eating a ton of homemade sausages in the fall sun. Admission is free, but you can buy food and drink tickets at the door and choose from a smorgasbord of treats like the aforementioned sausage, burgers, oysters, soft pretzels, local Folksbier brews, and so much more. Head on over to Court Street anytime between noon and 7pm to ring in fall the right way.