I want to get married in my parents back yard in Conyers Ga. When is the best time of the year to plan?

I would say summer. June is the biggest month for weddings- especially outdoors. If you don't want the heat that June can bring, plan a spring wedding.

Well I marry people outside all times of the year, ( burr in the winter)

Early spring or late fall when it is not too cold and not too hot. If there are a lot of guests some will not like it no matter what.

Will there be a large tent in case of rain, or will indoors optoin be available?