Waiting

Waiting is an action in Fallout 3. It can be used to wait for a period of time. Waiting is useful for getting into stores that close a specific time, and waiting for the sun to come up or go down.

Caravan Merchants
Waiting is a useful tool when dealing with Caravan Merchants. Travel to Canterbury Commons and wait for two hours by the large tree in the center of the cul-de-sac on the western edge of the town. If the merchant you want does not appear wait another two hours. This way you can cycle between the merchants quickly.