The bar, Coopers, in which Jamie and Erin are shooting pool is also a bar frequented by Doug Heffernan in The King of Queens (1998).
The seating order at the family table is different than the usual one. From Henry's point of view, instead of having Linda, Danny, Jack, and Sean on the right side and Nicky, Erin, and Jamie on the left, the writers put all the adults (with the exception of Frank and Henry of course) on one side and all the kids on the other.