Upper Onion Creek Campground does not have an exact address that works in GPS, so instead you have to use the map coordinates (latitude and longitude) below. Just copy the coordinates into Google Maps (or your GPS app), and it will take you right to the exact spot. Upper Onion Creek Campground Map Coordinates 38.71977328689441, -109.34396540859541
From the junction of Highway 191 and State Route 128, drive East 21 miles along the Colorado River. Turn right onto a gravel road toward Fisher Valley (not Fisher Towers Road) and drive 0.7 miles to the campground.
Business casual, since the wedding is outdoors, dress for the weather.