QUOTE]where does a VFR plan get sent to? (some places, the enroute people seem to get it, others not)[/QUOTE]
I was surprised recently when I phoned UK customs to ask if it would be a problem to return to the UK from France earlier than I had specified (nasty front on the way later...). They said, 'not a problem, we'll keep an closer eye on your flight plan'. I had assumed that smaller GA flight plans were not circulated that widely, but it seems that those in charge of security as well as ATC watch plans that are filed...