Mick O'Brien promises fresh crabs to his daughter, Abby, upon her visit to Maryland. "Fresh crabs" in Maryland means blue crabs which are steamed. It would've been humorous to show Abby's daughters learning how to pick steamed crabs. Instead, the family is shown passing around a bowl of snow crab legs at the dinner table. Fresh snow crabs are not found in Maryland.
Gran's Irish accent comes and goes.