Players are being provided GU shirts this year in team specific colors. You'll need this shirt to play in the games as simply a "dark" or "light" shirt may add confusion. If you lose your shirt, forget to wash it, or sell it for big bucks on eBay, you'll need to come up with a similar color shirt that doesn't look like the color of the team you're playing. That will be changing each week though. (It's probably easier to just find your shirt.)
Most players wear cleats or turf shoes, but they aren't required.
Gorge Ultimate discs are available now for sale at $10 each, with all proceeds going to Gorge Ultimate.