While many online casinos have loyalty programs or VIP clubs with specific details outlined onsite as to how to gain access or climb the ranks, Book of Casino does not.
That does not, however, mean that loyalty will go unnoticed. The opposite in fact.
VIP membership here is based on your activity level. The more active you are, the greater your chances that your activity will be spotted. Membership will then be directly extended from a relevant team member.
Benefits and rewards are on a case-by-case scenario, and depend on your interests, activities, and other relevant factors.