I once worked on the FX trading floor of a London back. FX shared the floor with bonds to the left and some kind of commodity traders to the right. Mostly FX traders. The 'real' FX traders, as there were a lot of support staff, had their own smoking lounge and their own catering. No need to go down the the main cafeteria for coffee or lunch.
One day Germany shifted the Basis rate 30 points and the DM, yes it was a while ago, vs everything else took off. Even the bond traders stood and watched the action for a couple of hours.
Regards to sex in a office, the head of building security for a branch office of a multi-national was recorded on CCTV bonking his secretary in one of the lifts.
"The only way for a reporter to look at a politician is down." -- H.L. Mencken