Hi, We'll be sailing the Euribia in Norway in April and I know the answer of what to wear question is Layers, but I'm wondering how warm they keep the inside of the ship. Will it be warm enough for sandals at dinner etc. Most of my dress shoes are sandals because I live in a perpetually warm climate. Also I'm looking for cocktails to try in the yacht club. I tend to drink gins, bourbons, and whiskeys but with boring mixers. Thanks for any help.