I will explain how it works for you. If you book an excursion from the website before your cruise the charge will be on your credit card right away. It will appear as a credit on your S&S account when you check it on board the ship. The reason to book an excursion ahead of time is that it could be completely booked by the time you get on the ship, thus, booking early means you get a spot!
2007 Victory & Triumph
2008 Conquest & Liberty
2009 Valor, Freedom, and Splendor
2010 Glory and Liberty
I gotta go where it's warm.....
Over 40 victim of fate.....