Md. Code, Local Government § 13–305

(a) A promoter, a sponsor, or any other person who organizes a convention,

show, or sale that includes at least 10 transient vendors shall pay a license fee and

obtain a license in accordance with this part.

(b) A transient vendor who participates in a convention, show, or sale

licensed under this section is not required to obtain a separate transient vendor

license.