Well, my seaside local area has the standard uniform of beach clothes and flip flops all year round LOL and my bigger town, well, its not really all that fashion forward either!
So, I have seen a grand total of 1 pair of OTK boots... and the way they were styled... *shudder*... Julia Roberts in Pretty Woman looked super classy in comparison! I haven't seen a pair in a shop though - but of course, we are just ending this winter, so perhaps next winter they may make an appearance.
As for leggings/tunics/dresses - its semi-common here - although shorts or jeans are a hands down winner.
Fashion trends don't really make a big impact here... I'm quite sure a lot of people just buy whatever is in the shops with no idea as to whether or not its on trend... yes, there are some that certainly would, but not the majority.