I grew up in the Northeastern US where the use of the phrase "all set" to mean "ready" or "finished" is common.
An example would be, "Are you all set with that?" (perhaps while pointing to an unfinished meal)
Another example would be, "Are we all set?" (as in "Are we ready to go?")
I never gave it a second thought until a friend from California told me that the usage of "all set" really threw him off when he moved to the Northeast. He had never heard that usage before ... hence my curiosity.
Is the use of "all set" exclusive to certain regions in the US? Is it used at all in Great Britain?