Mini sessions are a great way to
1) snag a photographer that you love but might not be able to afford the full session for
2) get a shorter session, if you don't believe you need a full
3) takes the guess-work out... the photographer will have specific times and location, you just need to show up (on time) and ready to take pics.
Here are a few samples from recent mini sessions at Emerson Creek Pottery and Tea Room.