So, what is everyone taking, as in suitcase or backpack wise? I am not sure which to take.
Here is my advice for how to survive this comfortably:
1. Pack a backpack, and nothing else (unless you have cameras, then you suffer like me)
2. In the backpack, put:
3 pairs of socks
2 pairs of underwear
1 long sleeve shirt
1 short sleeve shirt
1 small towel
1 deoderant
unopened package of instant coffee or several tea bags
toothbrush and toothpaste
passport
hotel confirmation
boat confirmation
map printout
airline confirmation
portable music player
cell phone
credit card
cash - exchange a moderate amount at the airport so you can use it for meals etc, that way you are not nickel and dimed by your credit card company for exchange or cash advance fees.
OK that is it. You should wear a long sleeve shirt and a hoodie, comfortable shoes if you will be walking around the city, and a pair of pants you don't mind being in for 4 days. If you have room in your pack, do not fill it. You will end up buying shit on the boat and will need a place to put it. In fact, if you know you will be buying shirts, you can delete 'shirt' off the packing list.
If you are a girl, or are travelling with a girl that has never done the global concert thing, you
must stress the point about packing light and wearing one outfit for almost the entire trip or she will be miserable and you will be more miserable. Makeup should fit in a tiny bag and only consist of like 4 things. You do not need your own soap/shampoo, etc, its in the hotel room, and you can buy anything you need on the boat if necessary.
And finally, don't bring anything you value more than seeing Katatonia live, as it has a good chance of being lost or stolen, unless it can be securely fastened to your body.