Do you often have meetings with overseas colleagues? Do you notice cultural differences? Do you read up on what kind of business etiquette or anything similar they have there? Or do you just dive right into IT stuff?

I don't read-up on cultural differences to prepare. But I may adjust or consult a collegaue's opinion after sometime depends if there are behaviors affecting progress of work or I just feel tension or awkwardness and I need a second opinion. I adjust my expectations to bare minimum so as not to get disappointed. During meetings small talk of maybe max of 5 minutes. On time and wait max 5 minutes for people to come to the meetings unless F2F and it is the client who is late.