Vampire Themed events are dark, occult related events with vampire themes that border heavily on Victorian Goth, Macabre, and Classic Vampire related Images.

A Vampire themed event relies on classic Gothic themes like manor houses, castles, heavy dark woods, candles, wrought iron, Gargoyles, caskets, crypts, and cemetaries/ Gothic style churches.

Colors of black and dark reds, are incorporated into all aspects of the event, including the food. Dark red wines, whole goats, Black and red flowers, and dark angels.
Vampire Defined Wikipedia