Grab a couple of beach chairs, or even blankets and pillows; pack a picnic, and pray for a cool breeze. A very good variety of shows each season.
The one unpleasant note would be the heat; my family prefers to avoid July and August here, so we usually miss out on the Shakespeare Festival. If you go, remember your bug spray and bring water!
Pros: free seating, fun atmosphere, ok to bring chairs
Cons: not enough parking, heat in late summer
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