My wife and I will be visiting Amsterdam in Feb 2024 and we are wondering if couples are allowed at the brothels or private houses in the red light district & surrounding areas. Also, are there any strip clubs in Amsterdam that welcoms couples?

You have to ask.
The issue is, if your wife is in a brothel or Prive, and they get a visit regarding employment permits, they will expect her to be a worker, not a visitor, and they will want to see her papers.
Some places work around this, but most just don't allow women.
Clubs always welcome women.
Sameplace, Paradise, showboat (is it open?), fun4two, fata morgana are all good for couples
Show clubs--Cassa Rosa, bannana Bar always welcome women.
Windows are possible. If the girl has an interest, she will let you know.
If she is not interested, she will pull the curtain, or turn away.
My guess is that almost half of window girls would at consider a couple.
You just have to negotiate the deal.
Inviting a girl back to your hotel is possible, but more likely on a repeat visit.
Escorts are the easy, but expensive, answer here.
Kinky.nl has lots of choices
I don't know what the rule is at Park 118

Weasel

Thank you very much for this information!