It has happened to us as a couple meeting a couple. All you can do is confirm same day and hope for the best, even if you speak to both parties.
We had a funny incident where the other couple was late to the restaurant. He called and said his girlfriend could not make it, but he came with another woman, Bambi, who I would like because she is 22 years old (I was in my fifties at the time). We were going to stay just to see this.
The other man called me back. Bambi was unavailable, but Amber would arrive with him soon. They were about 30 minutes late. It occurred to us that his new girlfriends may be prostitutes. We left the restaurant and called the other male and told him we intended to meet his girlfriend and this wasn’t what we had in mind.