Wake and Guam were regular stops for Pan Am 707s across the Pacific in the 1960s. Of course, Pan Am had built facilities all across the Pacific when they started their China Clipper flying boat pre-WW2. Commercial charter carriers operating for the US military to Vietnam would also use the facility. Strangely, the Pan Am 707s stopped at Wake both ways in the deep middle of the night. It must have had adequate lighting. It would be USAF military personnel.
In 1967 there was a significant shipwreck on the reef at Wake of the tanker bringing in 6 million gallons of aviation fuel, which gives a bit of a pointer to the usage.