My partner & I will be arriving in Prague at ca 9pm on a Saturday night. We will only have backpacks.

What are our options at that time of night with approximate expected cost to get from the airport to near Mustek A Metro station (Wenceslas Square)?

How safe would it be to catch Bus 119, then Metro A at that time of night? This appears to be the cheapest option.

Is there a teller machine (Visa/MasterCard) at the airport to withdraw some local money?

If we were to catch the bus, then I would think we would need coins to put in a ticket vending machine at the airport? I would think that a teller machine would issue only notes. Where at that time of night would we be able to change some notes into coins?

Sorry for all the questions, just trying to formulate a plan.

Cheers.