Just got back. We always take a soft-side cooler packed with specialty frozen meats as carry-on. Everything frozen and we've never had a problem with the airlines. Flew Delta this trip. Saw several coolers at the airport taped shut; obvious that others take things too--nothing new.
Only issue we had was going through C&I in Roadtown. Of the products in our cooler, 10 frozen, marinated chicken breasts created a problem for one of the officers. Even when informed they were for personal consumption, I still had to pay $10 duty for the chicken. They weren't even interested in the shrimp, filets, or other prepped meats. Go figure.