I could also be misreading. I'm a law school drop out and former paralegal , so I'm definitely deferring to your expertise, but since this is in layman's terms, it seems to apply.
From CDC website-
What is a public transportation conveyance?
A public transportation conveyance is any mode of transportation other than a private vehicle. Types of public transportation conveyances include airplanes, trains, subways, buses, taxis, ride-shares,
maritime transportation, trolleys, and cable cars.
Which public transportation conveyances does the order apply to, and in which areas?
The Order applies to all public transportation conveyances traveling into the United States (i.e., arriving from a foreign country) or within the United States (
including within states or territories or traveling between states or territories). This includes school buses. The Order also applies to all conveyances leaving the United States until they arrive at a foreign destination.
If a conveyance has outdoor areas (such as on a ferry or an open-air trolley or bus), wearing a mask is not required while outdoors unless otherwise required by the operator, federal, state, tribal, territorial, or local government. However, CDC
continues to recommend people who are not
fully vaccinated wear a mask in these areas to protect themselves and others. In areas with
high numbers of COVID-19 cases, people should consider wearing a mask in crowded outdoor settings and for activities with
close contact with others who are not fully vaccinated.
And congratulations on the upcoming wedding!