The first bus began operating from June 16, linking Vinpearl and Amiana resorts.
A two-decker bus in Nha Trang
The festival will end on June 19.
The buses operated by the Vietnam Tourism Charter JS Company have 55 seats and travel along Nha Trang's seafront.
Ann Anh Nguyen, an American Vietnamese, said that she is really interested in the 30-kilometre journey. She was among the bus service’s first passengers.
Three double-decker bus trips run every day from 7:30 am to 4:30 pm. There are nine languages on the bus and there are images of Nha Trang’s attractions.
There are seven stops along the route.
Around 200 booths for the Nha Trang Sea Festival 2022 are at April 2 Square