I (not pictured) have been to many high-end golf courses around the globe in the past few decades.Unai Huizi/Getty ImagesI've played golf for decades and have visited many famous golf courses around the world.I often see first-timers at high-end courses forget to check the dress code or choose the wrong tee.If you're going on a golf trip, don't overpack and check if the course has other amenities, too.I've written about golf for the past 30 years, though I've been playing since I was about 10.I've also been privileged to visit over 200 courses around the world, including legendary spots like Pebble Beach, Cypress Point, and Southern Hills — home to many PGA tournaments over the years.But I know very well that the game can frustrate and frazzle even the best players.Think strategically before booking your next golf outing or extended vacation, and avoid these mistakes I often see first-timers make when visiting high-end courses.Choosing the wrong course and teeGolf courses are like fingerprints: Each has its unique identity and characteristics.