Couple years back I wrote a journal about being the LX Op (Lighting Operator) for an amateur show at the fringe. I'm now the lighting operator in the largest (and therefore, the most demanding and also most popular ) venue for one of the largest companies at the 'Fringe. I have 3 days off from now until the start of September, have an at least 12 hour work day every day and will meet some incredible folk.
The Edinburgh Festival Fringe is the largest arts festival in the world, and bloody hope that this looks good on a CV and can finally get a bleedin' job with a proper company that does them big shows.
You should print up your own business cards and hand em out to any contacts you make while there. It's a cheap way to market yourself and it helps your image drastically.