The caches are set in a nice bit of countryside, lots of good views and plenty of walks to enjoy.
Poor satellite coverage.
The number of satellites that are "overhead" may be an issue when using a GPS in tree cover.
If you are in an area with lots of trees, then you may not get a 'signal lock' and your location may not be accurate or even displayable.
The cache is a small plastic container with a pencil and should not take long to find.
Congratulations to Sir PhilPamAndRob on being FTF, 10th October 2013.