Hi Nina
1. The mood is usually set by pouring drams

. At some tastings the talk can be too much talk and too empty glasses, so pour the first dram before the big speech is put forward. If you lead tastings you know that long speeches at the end often get ruined by people talking between themselves happy and tipsy
So the mood comes automatically if you don't leave empty glasses
2. There's no ice or whiskey rocks at tastings. The idea at tastings is to promote the flavours of the whisk(e)y and cold things like ice cubes only mask the flavours. I've been to 100+ tastings and never seen ice cubes. If the whisky is bad use ice cubes. Do have some water available thou, and some pipetttes. Adding water to a whisky is a personal thing and depending on the initial strength some might want to add water, some might not
/Macdeffe (also from Denmark, we have a danish whiskyforum as well :
http://www.whiskynyt.dk)