After seeing it for a second time, I am set on the fact that I will be doing a pretty comprehensive edit of this. The stuff I like in this film, hits on ALL cylinders for me personally. But the Canto Bight stuff just made me so angry this time around and the runtime of the movie did wear on me. What the Last Jedi needs is a tight and focused edit.

My full idea for the ENTIRE finn/rose subplot is the following:

Finn says that they surely cannot get past the shield. Poe raises his head as if he has an idea. We get the Maz scene. I really don’t have any problem with this scene like others. Maz is shown to always be caught up in something. It further connects both films and we get a great joke for me where she kind of gets sexual and just makes everyone uncomfortable. This stays for logic sense and for my appreciation of it.
Then we have our first scene of Canto Bight. I would cut down as many weird shots of aliens, champagne, and jokes as possible. Sadly, the public property joke has to stay since that’s the reason they get put in a cell. I also would cut the entire part where Rose talks about the fathiers. Overall, just making this scene as quick as possible.
Once they’re in the cell, cut the joke about not needing DJ’s help. Like RogueLeader suggested, we cut from DJ walking out the cell and them following, to the ship leaving. You would flip the shot of Finn and Rose leaving the cell to show that they went the same direction and axe her line of “This way” so it feels less like they went on some detour and rather that they followed him. This would get rid of the entire fathier chase sequence.
We next see them on their way back. This scene stays intact.
After this basically everything would be the same except cutting the ironing joke and cutting BB-8 in the ATST. Also I would cut them riding on top of the ATST with BB-8 and after Finn defeats Phasma, it would cut to their ship escaping the burning hangar bay.

Hopefully this would make for a much shorter subplot. If there are any ideas to make an even more radically cut down version of this that sacrifices less screen time then I would love to hear it out. Anything to mitigate this part of the film.