Is apporintment needed for visa?

Do I have to make an appointment to apply for my tourist L type? Or show up with my completed paperwork at 9:00am I have had 2 visa in the past and each year forget the process. Last year I was given a multiple entry for 1 year. I have UK passport but I am a Permanent resident of Nicaragua. My China entry permit has now expired. Can I pay a fee for same day issue?