Yep, we do. And while I'm sure it's obvious, I do want to make clear this is what has worked so far with us. We've tried different things, and some have worked better than others. Each group of people will be different and value different things.

The most important thing is obviously that everyone enjoy themselves and have fun.

Oh! And one more thing I forgot:

5 minute presentations, and you can't use presentation software like Keynote.