When I played in New Mexico a few years ago, Black Mesa and Paa-Ko Ridge. Between altitude, elevation, distance between tees, and that I played 36 and 27 respectively, I was able to enjoy my time without exhausting myself.
That altitude stuff is for real. Coming from close to sea level to 5,500+ and not having enough time to acclimate, I had a much more intense buzz after my post-round bourbons and beers than I had anticipated.