@Sybe,
Yes, I raise the rates and extend minimum length of stay for Carnival, CPL T20/cricket tournaments, concerts, Jounen Kweyol (Creole Heritage Festival), and December 22 through January 4. Like @Emilia42, I don't want to be the least expensive accommodation during these events, because it attracts the bargain hunting party crowd who tend to create damages that they cannot afford to pay for.
Also, I want to discourage last minute cancellations. This I Last November, I forgot to set my holiday season rate, and someone booked a suite for a non-refundable rate two night stay with a Christmas day arrival. I was irritated with myself for the oversight, because I normally have a seven night minimum stay during the holiday period, but was going to honor the booking. Two days before arrival, he wanted to cancel for a full refund, claiming that he tested positive for COVID the week before. I declined, and told him had he canceled when he first got his results that there would have been an opportunity to get another booking. Although CS, did agree with me and I got paid, I didn't get a replacement booking for that holiday week, and I missed out on five nights stay.