Found a great site for ya!
A Rustic Country Wedding
....galvanized tubs for old time Stewart sodas or IBC root beer, black-eyed susans, a barn with the rafters wrapped in white, twinkle lights, linen type chair wraps with sheaves of wheat tucked into the bow at the back, guest cards on a clothes line, the bridal party with pitchforks making an arch for the b & g to walk through, pot roast and apple cobbler, sweet iced tea, lemonade and apple cider.
For favors: gingham heart-shaped, lavender sachets, homemade jams or jellys in mason jars, love cake dry ingredients with recipe in a mason jar too!
Wish I could be there and wish you and the guests the best party ever!
hth