You just go to a participating HD dealer to sign up; basically sign a waiver and they give you a sticker that goes on the headlight or windscreen of your bike. Come to the breakfast meetup and ride to the sports park with the rest of us to the staging area. If you aren't in a group they'll just stick you anywhere, surrounded by a sea of HDs and leather vests. At Children's Hospital they have a drive thru drop off, or you can park and walk into the lobby where they receive the toys.