The Vault City courtyard area is the first district of Vault City an Outsider enters and hardly an indicator of the splendor of the main city.
John Cassidy (a possible companion) and his bar can be found here.
Joshua, a citizen of the courtyard was arrested by the city guard. Amanda, his wife is looking for someone to get into the city and get Joshua out.
The Vault City courtyard appears in Fallout 2 only.