If you're really a Southerner, you should know that it's "ice tea" -- no "d" after the ice!
And "sweet tea" says it all.
There is no need to say "ice sweet tea" cause it's is unnecessary.
Sweet tea is ALWAYS served with lots of ice!
Otherwise it's like saying, "Can I have a hamburger with a bun please?"
Never could stomach sweet tea in the North. Gotta ask for iced tea with sugar. Pour in the sugar to tea that's cold and has maybe 3 ice cubes in it, stir like Hell to try and dissolve it, and then think why did I bother to order this? Imagine ordering a Co-Cola and the waitress bringing you an unsweetened Co-Cola with a pack of sugar.
ONLY way to make sweet tea is to put sugar in it while it's still hot from boiling. Cool it and grab a half gallon jug, fill it with ice, sit down and commence to supperin'.