Perks such as early access to view a Cajole, and distribution of trophies will be granted automatically and you should receive email notifications when these are available.
Leaderboard Perks will be coordinated between the target and the campaign creator, and are subject to change. The campaign creator will be in charge of making sure you are informed of the status of the Leaderboard perks and what is needed to claim then.
Backers are responsible for any travel and/or accommodation required when claiming their Leaderboard perks.