The most positive thing I will say about this movie is that it is unlike all the other usual Hallmark rom/com stuff. Much of the comedy is a little on the silly side for me, so this doesn't get top marks from me for that. As for romance, these couples have already reached the point of getting married, but I really wonder how any of them made it that far. We really don't get to see much of what brought them together. Even so, Erin and David seem like a good couple, but mom is so awful I don't see how Erin got past that to the altar. How did Stella not see Mark's domineering character? Casey and Nick might have been good together since what caused their problems doesn't show up until after the wedding. In their case, the basic red flag I see is Casey's insecurities.
I mentioned the silly humor. Much of it was based on over-exaggeration like some of the things the dog did, or Renee. There is definitely an audience for this kind of humor, but I like a little less over the top. There are some good lines.
There isn't much romance. Every time something romantic was about to happen, there would be either a comical or annoying interruption, or both. Given that, and splitting screen time among three couples, there's no real chemistry.
There is at least one thing that doesn't turn out like I expected. A twist, if you will, given the genre, but it made as much sense as anything else in the story.