I think the catch to it would be for the member. It is a serious violation of Club 33 rules to use your Club 33 membership as a way TO GET clients. It's perfectly acceptable to use it for your clients. But GETTING clients BECAUSE of the club is a violation that, were the club to find out about it, would probably result in the revocation of that membership.
Rule number 2.14.2 states that:
"Club 33 Members may not at any time (themselves or through their family members, authorized callers, friends or others) sell, barter, auction (charitable or otherwise, despite a donation to a charity), lease, loan or otherwise receive compensation in exchange for either reservations to Club 33 or complimentary admission tickets into
Disneyland Park or Disney's California Adventure Park.
If this rule is violated, the Member's Club 33 membership will be terminated immediately. Members will be held responsible for the actions of others acting, or appearing to act, on the Club Member's behalf, in the sale, barter, auction, lease, or loan of Club 33 reservations or complimentary Park admission tickets. Members will not be given a warning or a second chance."