In the Amazon coffee shop I frequent on a daily basis there are 4 staff. All are excellent, helpful, friendly and always find the time for a chat. When the shop is rammed with customers I don’t even have to wait for my drink. They see me, make it straight away and hand it to me; great service. As a result of my “unintentional queue jumping” I asked one of them what their daily wage was. 300 baht was the reply so that was their tip 300 baht each. All 4 were really pleased with what I had given them. I will add they were going to get their tip anyway ignoring the fact they slip me my drink discreetly.