This was a new one for us this past year, as well.  We had a laundry list of rules to follow (so the school doesn't void their warranty).  The most frustrating was the "No Food or drink" (water was okay) and no candles or sand (see the Candle & Sand Banned in this forum for discussion on that).  We did okay, though.  Everyone brought tarps for under their tents and knew not to use stakes to hold them to the ground.  People weighted the tents (wind becomes an issue for us in the evening) with water bottles and such.   Anything like the stage had large sheets of plywood beneath them to keep from puncturing the turf. 

For food, we had a food area outside the field.  People could eat there or up in the bleachers.  We realized later just how hot it was up in the beachers, though, and this year, we will put up EZUps.  We'll just shorten 2 of the 4 legs so that they will stand straight and lash the legs to the seats so they don't blow away.  We'll take them down before Luminaria so we can set up the HOPE/CURE luminaria bags.

Turf is a lot hotter than grass, as well.  So we were sure to warn people ahead of time to bring towels if they planned to sit in front of the stage. 

Turf is definately difficult, but it can be worked.  And it sure does look nice in pictures.