It varies. I don't really keep count of it. Usually a couple of vacations a year, plus whatever sick days I really don't feel like working, and the occasional

It varies. I don't really keep count of it. Usually a couple of vacations a year, plus whatever sick days I really don't feel like working, and the occasional long weekend. Also it's not unusual to start late or knock off early if not productive. Why waste time writing bugs I'll just have to waste time reverting tomorrow? Most people in my company do about the same. Some take more, or structure it more compactly, a couple take less. As for infrastructure and team leads, that comes down to people and process. With standard processes and checklists that everyone's familiar with (and as much automated as possible), and with people frequently communicating and reviewing and discussing stuff, then if someone's out other people should be able to step in and pick up what they would normally do. And with the right people, they will.