Games: Game sessions are 3 hours. Build one-shot adventure that fit these time-slots. Discuss non D&D games with the DM Coordinator, and plan to have D&D games as backups.
Campaigns: Campaigns are a single game that runs across all 4 daytime sessions over the weekend.
Characters: DMs are to provide pre-generated characters suitable for their adventure.
Some battle boards and markers are available, but feel free to bring your own. If you have spare miniatures for your players, that would be useful.
There are some pre-written adventures and other useful resources in the DM Resources area.