Yes, indeed. I just got a quote for a verandah cabin on deck 9 on the Silhouette for Jan 31, 2020. While thinking about it overnight, with a hold on the cabin by my TA, the price went up $500 from the quote. Bummer.
If you book a private excursion online prior to your cruise, they usually set the shore meet time so that you are not jostling with the passengers rushing to get off. You can get excursion providers recommendations on cruise critic or travel advisor.