OCC Thread
Rules on crosses:
If you read the section in the core rule book about crosses in holy water, it describes using a physical cross to repel a vampire. And the vamp can defend from that by knocking the cross from your hand. Touching a vampire with a cross causes two points of damage.
No mention of wearing pictures of crosses repelling vamps or holding up two sticks in cross shape, etc.
That's consistent with the show as I recall.
So that's the rule in effect here. You can only repel a vamp with a Christian cross you can hold in your hand or wear around your neck that you obtain in a church, religious store, etc. Pictures of crosses on clothes or holding two stick in cross shape won't work. If it did, vamps would be way to easy to repel.
On lighting on the cemetery:
Between moonlight, residual light from nearby buildings, and a few exterior lights in the cemeteries, there will always be enough light to move around and fight without penalty. Buffy and the characters never seemed to have a problem with enough light in the cemetery and neither will we.