Take a look at their website to get an explaination of the process:
http://ladyandsons.com/index.php/restaurant/reservations/ The line starts forming EARLY. If you can't be there to get in line by about 8am in the morning then I wouldn't bother. You can't just show up and be seated at any time. They fill all the available time from that morning line. And I know this because they messed up our Saturday afternoon reservation, the hostess admitted that she had messed it up, but still couldn't/wouldn't seat us because they were completely booked. They went ahead and wrote us on the book for Sunday to make up for it.
We ate there last year (the Sunday Buffet) and honestly I was just NOT impressed. Was the food good? Well, yes. But not good enough for the premium price we paid for it. You could go to any good Southern restaurant in Savannah and get the same thing for much less. It was really a 5.99 buffet for 15.99. There was just nothing special about it at all. And you only get one small dessert serving. I tried the gooey butter cake and it was awful. Dry and tasteless. The banana pudding DD got was very good but they wouldn't switch mine and hers was only about 4 bites.
I am a huge Paula Deen fan and really was excited to eat there but ended up nearly $50 poorer and completely disappointed. The salad bar was the same prepackaged fixings and tub of dressings as you would get at any Golden Corral. The best part of the meal was the garlic cheddar biscuits but you can get the recipe for them off the internet! And they didn't want to give us seconds on them when we asked.
I think I have pics of the buffet if you want to see them.