Greetings Friends – including two men – always greet each other with a kiss on the cheek; if joining a small group, each person should be greeted and kissed. The gesture is repeated when saying goodbye.
Lines People in Buenos Aires are generally respectful of queues and you'll see orderly lines at bus stops. It's common to take a number in shops and doctors and wait to be called. In supermarkets and shops, people with babies and the elderly are often ushered to the front of the line.
Seats It's common for the young and fit to cede their seats on public transport to the elderly, children, pregnant women or anyone less able to stand.