Always remove your shoes and socks prior to entering a temple or home in Myanmar. Also be aware that it is considered rude to show the bottom of your feet toward your host, which can most easily be accomplished by sitting cross-legged. 

Never point at a person, or touch their heads. In general the people of Myanmar are not used to being touched by strangers, so tapping, hugging or putting your arm around someone is likely to regarded as a violation and cause unintended offence.  

If you need to attract attention, motion with the palm of your hand. It is a common gesture in many societies to affectionately ruffle the hair of children, but the head is considered sacred in Myanmar society and such gestures will not have the intended effect. 

Avoid political comment and criticism. Although much has changed in recent years, a thoughtful person will also consider that even invited political discussion may endanger their host. 

Visitors to Myanmar should be aware that it is highly likely that they will witness attitudes towards animals, which may distress, and prepare themselves in advance to deal with these matters with calm and sometimes considerable restraint. 

Overt public displays of affection between couples is frowned upon, particularly in traditional areas, and shows disrespect to the native culture. Conservative dress, especially at religious sites, is recommended in public areas. 

Tipping for services in Myanmar is in general unnecessary but will be accepted by Taxi drivers, tour guides, restaurant and hotel staff.   

When dining, the fork is used for prodding and manipulating food on the plate but eating should be performed with the spoon. If you are dining as a guest, the host will normally pay for the dinner and offers to pay, or contribute towards payment, however well intentioned, will cause embarrassment.