Sunday Best or as close to it as you will allow yourself to dress.
A little of both. The ceremony will take place outdoors (unless it rains), but the reception will primarily be indoors with doors that will open to a large outdoor patio.
In mid to late September, the weather in Chattanooga should feel like "a pleasant transition from Summer to Fall." Afternoons can range from the mid-high 80's, while evenings dip down to a crisp low-mid 60's.
If you are anything like Brent and I, this is a question we always want to know. YES, there will absolutely be an open bar. I will place more details on this when I have more info.
Yes, kids are welcome to the wedding & reception, though we do ask that if kids are coming to the wedding that you add them to the rsvp list.