Don't talk about politics with...
Don't talk about politics with any locals. If they ask you what you thing about it just say I don't know. Opinions about politics here can easily lead to arguements. Furthermore most people show great hospitality and are rather friendly -this is not always the case in big cities though-. Final tip: show respect for different religions by the way your dress / taking shoes off at mosques etc.
Float in the dead sea water
A lot of people come to see the dead sea and to float in the water.
A well known custom is to read a news paper in the water while someone else is taking your picture.
Watch the sunset and sunrise over the dead sea
A lot of people (like me) come very early in the morning to see the sunrise over the dead sea and also a lot come to see the sunset.
the view here is beautiful , magical.
Dead sea mud
A lot of people buy dead sea mud , cover their body with the mud and after a few minutes go into the water.