The phrase "alternating tours" is correct and usable in written English.
It can be used to describe a schedule or arrangement where two or more parties take turns or rotate in performing tasks or duties.
Example: "The team will be working in alternating tours to ensure that all shifts are covered without overworking any individual."
Alternatives: "rotating shifts" or "shift rotation".
There are three alternating tours — "High Seas on the Inner Harbor," "Fire, Floods and Floating Containers" and "Protecting Our Ports" — and each features guest speakers from government agencies, the maritime industry, universities and recovery organizations.
The following years would see Tillman alternating tours between teaching assignments at the academy and surveying the last unexplored portions of the American West.
Campbell plays along, alternating snappy tours en l'air with expressions of mooncalf disbelief at his good fortune until Vallo finally takes him by the ear and leads him into the bedroom.
Alternate Realities tours to London, Brighton and Bradford in the UK, plus Montreal and Buenos Aires.
Perhaps the alternate road Tour?escribes at the end of his essay is not so "rarely traveled".
I like to imagine that, in some alternate universe, tour buses are trundling around Los Angeles, showing gawkers the homes of a different class of celebrity — not the stars of the silver screen but the stars of music, literature, and philosophy, members of that extraordinary constellation of European émigrés who took refuge in Southern California during the Nazi period.
Threatened fauna receive extra protection within the 'Barna Mia' animal sanctuary, which is open to visitors by appointment for nocturnal tours on alternate evenings.
But Mr. Leibell, a Republican from Putnam County, has an alternate proposal: a tour of duty as a diplomat in some unsteady corner of the globe - perhaps Iraq or Libya.
Vince Guaraldi started using a Rhodes in 1968, and toured with it alternating with an acoustic piano.
He and Dillon Francis were announced as alternating supporting artists for the summer Mothership Tour 2014 with Skrillex.
Fluorescent lights and the whir of credit-card purchases, but many best-selling big names alternating with lesser lights; often oriented to book tours.
