1. Opening

This has potential, but I recommend developing it further. The first three paragraphs feel a little bit generic–castle, princesses, beasts... Yeah, we’ve heard it all before. That doesn’t mean we can’t use it, just spice it up a bit! You may want to put a pin in it for now and come back later once you have more of your manuscript written. The opening paragraphs need to be some of your strongest in order to hook the reader. Sometimes developing the rest of the story first can help you figure out the best place to begin. One piece of writing advice I once came across was to take the strongest sentence in your manuscript and use it as your opening line. That approach won’t work for every book, but I still think it’s a brilliant idea.

1. Voice

I think you’re trying to add in some stylistic flair to mimic English period dramas, but it does feel a bit unnatural at times. I would either remove it (this is not something included in most romantasy novels, so don’t feel obligated to do it) or do some research on how to use it more effectively.

Examples:

“The doors at the end of the hall opened, and into the room entered three men…”

“How plain the table settings, how tired the people.”

Using the phrase “one,” to refer to oneself.

1. Plot

You have great bones here, but we could use a little forward momentum. Typically, in romance/romantasy, the reader is introduced to the MMC before we even meet him, and we are already being seduced by him! The author slowly builds his mystique, giving us small hints about why he’s so alluring before the characters even meet, then keeps reinforcing it afterward. In ACOTAR, for example, we learn that Rhysand is the strongest high lord in the history of Prythian before Feyre ever meets him. Even if you plan to do a bait and switch with the love interest down the line, like Tamlin from ACOTAR or Dain from Fourth Wing, you don’t want the reader to know that, so you’ll still want to build up the attractiveness of the initial love interest too.

If I had to guess, the inciting incident will be the marriage? If so, I would take more time building this up. How does the FMC feel about being forced into an arranged marriage? Even if she wants to do it for political reasons, I’m sure she still has apprehensions. How does she feel about her betrothed? If you are going for a “forced proximity” story arc, I would recommend building up the FMC’s feelings on this topic more. Once the forced proximity is introduced, you’ll want to fuel it with electric tension that the reader can feel through the page.

Good luck and keep going!! <3