Event description, start time, end time, etc.
Do you need a screen & projector, PA system, help with setup/teardown, interpretation, special physical accomodations, etc.
You can totally ask for donations, though.
We are an all-volunteer project. We try to promote events as best we can, but are often really busy with other tasks. The more you can do to help us out (create your own facebook event page, design a flyer, etc), the better your event will probably be.