Lion spray warning

This warning is painted at intervals along the benches in front of the lion area in the Aldergrove zoo. I have a couple of questions:

1. Why are the benches placed there if the lions are likely to spray in that area?

2. Does anyone ever sit on these benches? If so, why?

In this video, taken at the San Diego Zoo, a lioness is fed meat by hand, and a lion licks his mate's head fondly.

Then, apparently fed up by the laughter of the encroaching guests, who are ignoring the spray warning sign, he turns his back on them and lets fly.