Israel takes the safety of tourists and locals very seriously, so your luggage will be thoroughly searched when you cross the border at the airport. Authorities may also ask you to show your belongings if you are in crowded areas with a bag or if they think you are suspicious.
As for the usual rules of behavior in Ein Bokek, remember that short clothing is not allowed in churches and temples - men and women should have their shoulders and knees covered, and women should cover their heads.
There is a ban on smoking in public places, and as for various establishments, the rules are set by the owner and it is advisable to check the nuances with the waiter first.
It is also necessary not to forget about the peculiarities of the water in the Dead Sea. Of course, everyone claims that it is simply impossible to drown in it, but still, you should not joke like that, and while in the sea, you should be careful to turn over. Be sure to avoid getting water on the mucous membranes and especially in the eyes, do not go into the water if you have cuts or scratches - sea salt will corrode the wound and cause pain.