Sandringham is quite tatty. No woods off the grass tees. Distance markers useless. Very windy on still days. Balls a total mixed bag of ancient and new.
Zero use when you're trying to tie down swings and distances.
I find most driving ranges are useless in dialling in distances. The balls are generally less than optimal the distance markers are questionable or brought in to compensate for the balls.
To be honest the virtual golf is probably taking a fair bit of business away from them there never seems to be as many on the range.