It's great to hear that you and DH have booked your Hawaiian Island Sojourn on Viking Star. That sounds like an amazing adventure!
Regarding the gratuities, it's understandable that you were surprised to see the price increase. Usually, once you've made a deposit, gratuities tend to stay the same. It's a bit puzzling why they would change, but sometimes pricing policies can vary between companies or specific circumstances. It might be worth reaching out to Viking directly to get a clear explanation and ensure there are no misunderstandings.
As for bringing your own beverages onboard, it's always a good idea to double-check with the cruise line directly. While the website FAQs state that you can enjoy your own choice of liquor in public spaces and your cabin without a corkage fee, it's strange that the person DH chatted with mentioned it could only be enjoyed in the cabin. It's possible that there was some miscommunication or a misunderstanding from their end. It might be helpful to reach out to Viking again for clarification to get the most accurate information.
Remember, it's always a good idea to clarify any uncertainties and ensure you have the most up-to-date information before your trip. Wishing you both a fantastic time on your upcoming cruise, filled with unforgettable moments and beautiful memories!