Other than the normal walkway benches (that seem to be getting fewer these days) we didn't notice any extra seating this past April. I suppose you could take your plate and go to the seating up by the Outpost, but it's a bit of a walk and not many tables there.
There are some "leaning tables" on the wraparound level of the Mexico pavilion. Not a great many, but probably six-ten on the left side of the pavilion. We saw folks sitting on the wall by the tables, but that seemed a bit dangerous given its height. Very, very few benches in the area.