Vault 81 Tour

 is a miscellaneous quest in Fallout 4.

Detailed walkthrough
On the player's first interaction with Austin, he will offer to take player on tour of vault for a price of 5 caps or for free if the player successfully passes a Charisma check. When the player completes the tour, they will receive 88 experience points.

This quest can be failed if the player moves too far from Austin during the visit.