The invites were programmatically generated based on criteria we were looking for and somewhat random from there. Round 1 of closed beta is very small and we've maxed out the capacity on TRIBBLE with queues to get in.
We are going to be adding more people as we get closer to launch and there will be an open beta if you don't get one of the invites prior to launch.
We appreciate that not everyone gets an invite and we're sorry. There are many many captains out there and this is a very focused test until we're ready to get the open beta started.
Thank you for your patience. May 21 is coming up fast!