First of all, even in the South, iced tea is only served at informal meals or in the afternoon. According to Southern tradition, you would serve iced tea in a tall glass on a saucer with a doily. After you stir your iced tea with your long iced tea spoon, the spoon would be placed on the saucer (behind the glass). If there is not a saucer, then you keep the long spoon in the glass after you stir. You do not put the used spoon back down on the table. Yes, the southern ladies would say leave the spoon in the glass, hold it while you drink, and obsessively carry your glass wherever you go!
That said, drinking glasses of any kind — water, wine, juice, iced tea — are placed at the top right of the dinner plate, above the knives and spoons. This is true for a formal or informal dinner!
First of all, even in the South, iced tea is only served at informal meals or in the afternoon. According to Southern tradition, you would serve iced tea in a tall glass on a saucer with a doily. After you stir your iced tea with your long iced tea spoon, the spoon would be placed on the saucer (behind the glass). If there is not a saucer, then you keep the long spoon in the glass after you stir. You do not put the used spoon back down on the table. Yes, the southern ladies would say leave the spoon in the glass, hold it while you drink, and obsessively carry your glass wherever you go!
That said, drinking glasses of any kind — water, wine, juice, iced tea — are placed at the top right of the dinner plate, above the knives and spoons. This is true for a formal or informal dinner!