The competition for passport slots has gotten more fierce as travel restrictions loosen and foreign travel picks back up. By offering advice on how to check availability, comprehend the underlying systemrummy 9, and make an appointment, this article seeks to demystify the passport slot application process. With this information at your disposal, you can expedite the application procedure & reduce the anxiety involved in getting a passport. looking up the availability of passport slots. The first thing you should do to make sure you can get an appointment quickly is to check the availability of passport slots.