re: Cruise extra costs question

Soft drinks and alcohol are not included.

Cokes are ~ $3 per can. Beers and mixed drinks are probably around $7 depending.

Gratuity is a set price per day, I recommend pre paying them. If you run into issues, you can always ask that they be reimbursed. You can also tip more if you like. I typically give my cabin steward a tip when I get on board and ask for wine glasses. Every night I have iced down beverages and new glasses on top of my good service. They also know your name from then on.

Excursions can be booked through the cruise line so you can see that ahead of time as well.

Expect about $50 per person on soft drink plan. $70 per person on gratuities and $80 - 100 per on excursions.