The incident happened the day before they were due to be wed.
One person was injured in the attempted robbery of a Night and Day store.
Police are hunting a solidly-built woman and two men in face masks.
The group could be connected to other robberies.
They left in a stolen vehicle with cash and cigarettes.
The 17-year-old will appear in court on Wednesday.
Not surprisingly, the man has now been arrested.
One suspected offender is still on the run from police.
The closures were for staff safety - but left the public fuming.
He told FBI agents his pension wasn't big enough.
With the nearest bank 62km away, the small community is struggling.