Well, someone in our group on Sunday was asked if she *wanted* to add shrimp. She didn't so I can't tell you the answer for sure, but I suspect that it is an approved add-on.
I'm not sure what is meant by an "approved" add on, but you can add anything you want and pay OOP for it. We had a great time at CR on the plan, but didn't get this item...sorry.
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