Hi there! Do you think it will be a problem to get a bus ticket to go from Macau to Guangzhou (via Zhuhai) on January 30th?

Yeah, it may be a little hard to get a ticket then, because many Chinese people will go home and it will be very crowded. It is possible to book the bus ticket in advance, but the booking website seems to be Chinese version. Sorry for this! All in all, if possible, you are highly suggested to change your travel time.