Same crap happens with every beta ever so I might as well tell would be early starters....
Most betas will NOT!!!!! let you keep your character that you used during the test.
So don't get too attached if you do get chosen.
Once the real game starts you'll be at ground zero and possibly looking at a world that closely resembles what you tested in, but has different quests, goals, NPC locations, maps, walls, doors, etc.
P.S. Mach, DON'T LET WAYNE HAVE YOUR P/W!!