Of course, Equestria is no different. From the Bridleway musicals of Manehattan, and the aerial performances of Cloudsdale's Wonderbolts, to the fashionable elite of Canterlot itself, ponykind has quite rich cultural traditions all its own. And here's a selection of cultural examples for your perusal:
Gallery for Week 120
Do these winged ponies bring peace or war? They seem at least to be improving the sky's decor. - fetechbeer
Some ponies don't know their own shade, though this should not cause them to be dismayed. - fetchbeer
Culture doesn't mean just a beard and hat, but it's alright to start with that. - fetchbeer
Smashing tea, just smashing.
Cliches suit some rather well, and at this one he does excel. - fetchbeer
Some ponies dislike curds and whey, and would rather have non dairy places to play. - fetchbeer