GRCSM_220714_1323
Existing comment: Marks are required if you choose to ride the Grand Canyon shuttle bus.
You have other options if you are opposed to wearing a mask. [They don't explain what they are but I presume walking is always there.]
Drivers are not responsible for making the rules.
Please don't argue with the drivers about wearing a mask on the bus.
Have a great day here at the Grand Canyon.
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