Bring your own pen. This is my first attempt at placing a cache. Do not park at the nearby parking lot. There is parking along the residential street next to the field. Access to the trail is at the southeast corner of the field. When you start the trail, you'll go down a small steep hill. The trail goes either straight or left - take the left turn. You'll need to step off the main trail a total of 25-30 feet to access the cache. Make sure you hide it well so the casual passerby won't see it. Also make sure you latch it shut to keep the weather out. Cache is a small plastic container. There's a special item inside for FTF. I've also placed a Euro, casino token, arcade token inside. As you get closer, the trees make GPS tracking more tricky, so I've included some hints.
I highly suggest you don't do this at night.
Update 1-25-12: Cache container is now a small lock-n-lock
Update 7-15-12: After the steep hill, go straight, not left.
Congrats to 2nd1of3 for FTF!