Rotterdam has a swingers club called the moods bar. Has couples there entertaining. Well. Their wife being fuked by many. But also has gay days so if that's not your thing then check the schedule first. Not my thing neither.
The place has trans days too. Some nice trans. Some not so nice. All getting busy or trying to.
The last time I thought my luck was in. But no such luck. A nice plump married milf type mid 40s dutch lady came in. Put her clothes in the locker. And was ready for action in her short skirt. The whole club followed upstairs. It looked like she'd arranged a meet. They locked the locker and the fukin went on for a good while.
Seen some very sexy Dutch milfs and gilfs there. Some nice trans too. No oriental ladies but some oriental trans but not many.
There's no rld in Rotterdam unfortunately but there are massage parlours and wgs in some sex shops. Or was. I think some sex shops have closed down. Only really have experience of the moods bar when it comes to Rotterdam and some bars and shops. Nice city. Very close to Den Haag for it's rlds.