Not a lot, but it's there and it's important to know why it's there. You can't understand western culture if you don't undertand that holiday comes from holy day, but we just had July 4 and it's a holiday even though it isn't a holy day.
Are you sure you're in the south? Last I heard BBQ was still a virtual sacrament down there (I'm from VA) and nothing says BBQ like the 4th of July.
(That was humor, trying to lighten the clouds around here...)