Jeans are perfect to dress down or dress up!!
Women can get away with pretty much anything, trainers, stilleto's, boots, caterpillars, wedges, flipflops
For men, trainers, beige lace up chunky shoes or reefs even, even tennis shoes or yachtie slipons. Very flexible so you just go with what you feel comfortable in. In this day and age pretty much anything goes
But my personal choice for women is UGGS for winter, flipflops for summer and beige shoes with blue jeans very western!! For men I do like the beige caterpillar style shoes, or decent trainers! Just my opinion though
Kaftans for women and polo shirts for guys looks good! Ooh and a denim shirt for the guys!! YUM YUM!!
Good luck! 