Everyone creates characters, usually their characters from Forces of the Empire, but others are welcome as well, and we interact as our characters.
There is also a battle one night. The Rebels and Imperials go at it in the hall, all out, for about three or four hours. There are many other events as well, such as "Peace" talks (never very peaceful), or perhaps the Emperor will put in an appearance.
If you would like information on the Blaster Battle contact FoE at FoE-info@deathstar.org.