Buying tickets online through Ctrip seems to allow same-day purchases.
We are going from Zhuhai, need to book the return ticket in advance, and when leaving we will book both ways on the ferry at横琴(Xiacao), the latest departure is 17:30, and then board the boat at East Island Terminal.
Morning departure: Zhongshan District - Dongao Island
Transportation tool: Take a speedboat (approximate travel time 30 minutes)
Breakfast: Suggest purchasing on board
Go to Fuhua Terminal and take a bus to Zhuhai. Bus ticket costs 20 yuan. Get off at Gongbei Port, then take city bus #11 to Xiangzhou Harbor where you can buy ferry tickets to go to Dongao.
First take the car to Xiangzhou port, then take a boat.
On Ctrip’s online booking platform, it seems that you can buy tickets for the same day.
We are leaving from Zhuhai and need to make reservations for our return ticket in advance. On the way, we will book both going and returning tickets at Huanggang Port. Our latest available ferry back is 17:30 and we will board at Dongao Island dock.
Morning departure: Zhongshan District - Dongao Island

  • Transportation tool: Take a speedboat (journey time approximately 30 minutes)
    Breakfast: Suggest purchasing on board
    Go to Fujihua Terminal and take a bus to Zhuhai. The ticket costs 20 yuan. Get off at Dazhushaba Port, then take Bus No.11 to Xiangzhou Harbor, where you can buy your ferry ticket for Dongao.
    First take a car to Xiangzhou Port pier, then take a boat.