Moonbase peaked in the early 2000s and was among the first collaboratives to really open up to all builders. The folks at DixieLUG and GFLUG are working together to bring back Moonbase to BrickFair Alabama in 2016.
You are welcome to join! And you're welcome to bring Moonbase to any BrickFair event.
Here's the standard. Note that some groups in recent years modified this standard to their liking. But this is the original and what BrickFair uses: