Okla. Admin. Code § 660:20-9-9
(a) Vacation certificates. Vacation certification shall be submitted to the Department and shall meet the advertising standards in this Subsection. Any vacation certificate used must be submitted with component parts, i.e., registration card, letter of congratulations, reservation form, confirmation form, signs, etc.
(3) The following must be prominently disclosed: "While on your vacation you will be invited to attend a land sales presentation by (name of subdeveloper) for its property registered by the state of Oklahoma. Attendance is/is not required to make this certificate valid." Certificates, advertising or other promotional material shall disclose the terms, conditions and prerequisites to use and enjoyment of a visitation program, including the following:
(b) Promotional meetings. If a land sales presentation is to be used in connection with the vacation plan, the standards of this Subsection shall be used as a guide in determining whether or not the nature and manner of conducting the meeting are such as to fully disclose all significant facts concerning the subdivision.