How many vacation days can I get off working retail? I work at a retail store (not a manager). I was thinking for about 6 days. There's no vacation time system or PTO. it's all up to the manager.
You've put the answer in your question: it's all up to the manager.
Usually there's a vacation or PTO system which has guidelines to inform you of this, but if there isn't one, then it can based on your job and your management. The best solution would be to have the dates that you want planned out, as well as the reason why, and to sit down with your manager to talk it out.