Show and tells for rendezvous skills like primitive archery, making moccasins, fire with flint/steel, trap setting, labor and time saving ways to clean a rifle, making cowboy coffee come to mind. After a shooting event, my experience has been most folks are tired and ready to go home and clean rifle and self, so to keep them around some shade to sit in and something to eat or drink might be necessary.
There are non-alcoholic beverages (e.g. coffee and switchel) plus plenty of 18th/19th century recipes to draw on, although some of them might require a cooking fire to be going during the shooting events so as to be ready to consume when the shooting is over.