LUNAR is not a service, it is a member participation organization. For that, you need to help out and setting up is probably the biggest job out there. The launch starts at 9:00 a.m. so try to arrive by about 8:00 a.m. to help set-up. If you arrive later and the pads are not yet set-up, walk on over and ask what you can do. Note that you get paid in flight cards for helping to setup.
More information on setting up, tearing down and helping out during the launch is in the Helping Out section.