You must select a caterer from their approved vendor list. They also have a list for other kinds of vendors as well, i.e. bartending, dj, etc. Also note - regarding alcohol, you MUST select alcohol from their list, which they provide, at an additional cost.
They don't do their own in house catering but they do have several approved contract caterers on their site under wedding and event resources is a vendor list. You can hire your own but they must sign a contract in advance and be approved.
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