(2) A vendor required to collect the tax upon predominantly tourism related retail receipts and the tourism assessment shall be personally liable for the tax or assessment imposed, collected, or required to be paid, collected, or remitted under section 4 of P.L. 1992, c.165 (C.40:54D-4). Any such vendor shall have the same right in respect to collecting the tax or assessment from that vendor's customer or in respect to non-payment of the tax or assessment by the customer as if the tax or assessment were a part of the purchase price of the property or service, amusement charge or rent, as the case may be, and payable at the same time; provided however, that the director shall be joined as a party in any action or proceeding brought to collect the tax or assessment. For purposes of this paragraph, "vendor" includes: an individual, partnership, corporation, or an officer, director, stockholder, or employee of a corporation, or a member or employee of a partnership, who as such officer, director, stockholder, employee, or member is under the duty to perform the act in respect of which the violation occurs.