What things should I not do in Iceland?
I will be going to Iceland in a week and I was wondering what things I shouldn't say or do in Iceland.
i.e. I heard you don't tip waiters at restaurants in Iceland.
Are there other things like that? Or are there annoying touristy things that Icelanders don't like? I want to try my best not to be rude or annoying in any way.
Thank you very much.