I'll be going from guangzhou to macau for one day trip on this saturday. Plan to take a bus

Hi, I'll be going from guangzhou to macau for one day trip on this saturday. Plan to take a bus to macau from guangzhou.

Where should i go for the one day trip in macau?
What time is the last bus back to Guangzhou and where should i take the bus?
Any transport back to the bus station if i'm somewhere around the sightseeing place?

Thank you so much for your kind help.