A bit of both. My life is a sort of organised chaos and being retired, I have few schedules to think about. I tend to have ideas that I shelve for ages and then at some indeterminate time, get on and do them.
Always a planner. I do not care for spontaneous activities. I have to be ready to do whatever it is that's to be done. I can't just up and go do stuff. Mainly because of my health and my lifestyle.