My two cents: Canto Bight is thematically all about how remaining neutral in a conflict is as bad as siding with the oppressors. DJ represents the temptation that Finn has to leave the Resistance like he left the First Order, which Finn ultimately rejects. So I think having them arrested for being part of the Resistance waters down the idea that Canto Bight is neutral, representing the amoral selfishness of selling to both sides with no regard to ideology.

Perhaps they could get arrested for a different reason - something more meaningful than a joke about parking violations. I’m not sure what, but those are the kinds of creative questions that people around here often come up with great answers to.

That all said, of course, it’s your edit and you don’t need to change your plans based on someone else’s opinions! You’ve clearly thought a lot about how the line change fits into the movie, and your edit might be doing something completely different with Canto Bight anyway. I’d definitely be interested to see the cutlist.