The truth is that you are often at liberty to do whatever you please on vacation but not when you travel for work. Lack of proper preparation will not only make you naïve and unsophisticated, but it also bears the risk of embarrassing your host and making you seem less ready for a similar role or position. Lack of proper preparation also bears the risk of negative impact on your future career.
This calls for doing some research into the culture and customs of the natives. This would help avoid the possibility of offending the people you are supposed to work and or stay with. It would also come in handy as a security cushion in the sense that you’ll be able to appear more of a local than a tourist. You could do this by reading books or consulting with people who have been to the country.