The only time I hear them is when there is a small burst of a cheer everytime a Saprissa player dives.
That's a latest-gen turf, same type as the Chivas' turf in Omnilife Stadium, closest you can get to a natural pitch with turf, so if you can't play there then you can't play anywhere.
It is FIFA approved and is used in Toronto, used to be for RBNY, in Seattle, too. It isn't as if we don't see it several times a season.