While the signup page doesn’t mention the bonus, Club Carlson is going to award 500 points to people who sign up for their free ‘Club Carlson for Travel Arrangers’ program by May 31. Points are supposed to post within 14 days of enrollment.
The idea of the program is you’re booking hotels for other people, they’ll reward you for booking Club Carlson hotels. I’ve often wondered why more programs don’t directly reward travel arrangers (as opposed to companies) in the mold of the 1970s-era Southwest Secretaries Program.