The Marble Canyon Chevron is a great place to purchase alcohol and any last-minute items. If you did happen to forget sunscreen, SPF chapstick, a hat, neoprene booties, or gloves, they have a limited selection of those sorts of items as well.
You can also purchase alcohol before heading to Lees Ferry. The gas station has a surprisingly good selection of domestic, craft, and imported beer (in cans) and boxed wine. They do not have hard liquor, so purchase that ahead of time. For more info about beverages on the river, check out our Beer Breakdown blog.
For trips leaving from Las Vegas: Once you land in Marble Canyon, you’ll have an opportunity to walk across the street and go to the Chevron.
For trips leaving from Flagstaff: If you want or need to stop there on your way to the launch point, just mention it to the driver and they will gladly make a stop.