This drama supposedly tells the story of two brides who accidentally swap their carriages but the wrong husband at first turns out to be their Mr. Right in the end. At first glance Wrong Carriage, Right Groom has a very interesting concept however the execution of it is bad. I thought this drama was going to be a cute historical rom-com about how the brides fall in love with the grooms and go through ups and downs together but unfortunately that part was wrapped up within the first few episodes and the majority of the rest of the drama was filled with the villain and side characters.
The screen time is mostly about one main couple who has some cute moments together and the evil guy who constantly tries to ruin their fun for no reason. The second couple is cute but unfortunately doesn't get that much screen time in comparison to the first. And there are too many side couples thrown into the mix for such a short drama (read below the short info about the all couples).

POSITIVE:
- Likeable and well developed characters.
- Great chemistry of the three couples with the most screen time.
- Cute romance.
- Great acting.
- Set designs and costumes are beautiful.

NEGATIVE:
- Couples fall in love with each other within the first few episodes (too instant love for me without any proper built up).
- Nothing unexpected ever happens. The way the drama is edited shows all characters discussing what they will do before they do it. This ruins it for me as it takes out any sort of suspense. If I already know the bad guy will try to poison them and that the good guy already knows and will do such and such, what's the point of even watching how it unfolds when I'm already being told that.
- Plot is underdeveloped. I felt like boring conflicts were created and things were thrown in so that there was something for the characters to do. But it had no real purpose.
- Too much screen time on the evil guy and his boring schemes.
- Too much screen time on two of the side couples (an older guy with an immature girl and an evil guy with an evil maid).
- Not really the rom-com feel I expected as most of the screen time is about the boring plot.

COUPLES:
1st couple - rich, scholar-type male who pretends to be sick and a bubbly martial artist girl (the main focus of the story),
2nd couple - military general and a quiet, intelligent girl (not enough episodes for them, in some episodes the characters are totally missing and their story gets forgotten.)
3rd couple - soldier and a princess (prominent later in the drama for a few episodes).
4th couple - evil guy and evil maid (too much screen time and super weird relationship, totally unnecessary).
5th couple - married older guy and his immature wife (prominent for a few episodes, I couldn't stand the wife, totally unnecessary story).
+ two very short side couples that are just there for a short bit.

OVERALL:
It's an ok story to watch to pass the time or if you've had a long day and want to unwind. The drama could have been great.. but it's not. Wasted potential. Some episodes are funny and engaging, others super slow and boring. Plot is very weak and the only reason I finished the drama was for the actors (and for the sake of seeing the end really).