Marriott Conference Centers typically have exclusive catering agreements with specific vendors, which means that outside catering is generally not permitted. The venues often emphasize the quality and consistency of their in-house catering services, which have been carefully designed to meet the needs of various events. However, restrictions may vary by location, and there may be certain circumstances where exceptions can be made. It is advisable to review the specific policies of the particular Marriott Conference Center you are considering for your event. For the most accurate and detailed information about outsourcing catering, it is helpful to explore the official website of Marriott Conference Centers, as it may provide guidance on this subject, including the appropriate contacts and procedures for inquiries.