I'd like to ask if I could apply for the 24-hour TWOV in these two cases:

- ferry Hong Kong - Macau - Zhuhai (max 24 hours stay in the city) - Hong Kong,

- ferry Hong Kong - Macau, then train to Zhuhai (max 24 hours stay), then ferry to Hong Kong?

If I understood well, if I want to visit the city (Zhuhai) I need to ask for temporary stay permit. Is it still 24 hour visa for free or do I have to pay for it?