Go to discgolfdirectory.com There click on Nevada, and the courses and directions are listed
Sunset Park is the best one, 24 holes. They will be having their Holloween Tournament shortly. LV has a website. Take the time and explore what is there. Good luck.
I like mountain crest park but its pretty far from the strip (If that's where you're staying). But if you go to the northwest side of town check it out. But I'm a local and that's where we play regularly ( almost every day around 530). And of course you can drink its vegas!