Punctuality:Generally punctuality is a must for both business and social engagements Being late-rubber time-is customary in certain Middle Eastern,Central and South American countries. Be patient and avoid showing sign of displeasure when the buyer or the host shows up 15 to 30 minutes late.Sometimes it is unavoidable to wait for an hour. Punctuality: Generally punctuality is a must for both business and social engagements. Being late-rubber time-is customary in certain Middle Eastern, Central and South American countries. Be patient and avoid showing sign of displeasure when the buyer or the host shows up 15 to 30 minutes late. Sometimes it is unavoidable to wait for an hour