No matter what time I go to bed, 10pm, 1am, 3am and take my Xyzal and Flucin-cream, I have for the past 6 days woke up between 7:43 and 7:48 am. No alarm, no usual schedule of that, nothing.
From Stockholm Arlanda-Airport you can also choose the high-speed train service Arlanda Express. Stockholm Arlanda Airport. Stockholm-Arlanda Airport is located 40 kilometers (25 miles) north of Stockholm City. The Arlanda express train takes you from Arlanda Airport to the city center. The platform is easily accessible, underneath the arrival terminals. Departure: every 15 minutes (for most of the day).
Generally, for 2 or more people travelling together, a taxi will be the best option unless your ship doesn't use the cruiseport at NynÃ¤shamn which is nearly 100 kms south of Arlanda airport. On Royal Carribean web site they give information about the cruise port used in Stockholm and it is the Freeport Cruise Terminal. In order to be absolutely sure about this I recommend that you double check this information with them. As said in previous post, a taxi is the easiest option.