I used to put my jewelry in the safe every night. Now I get lazy and just put it in a drawer. Our last 2 cruises there was a jewelry box on the vanity that I used. I've left small bills, tablets, phone our with no issues. Cash, wallet and passports go in the safe and stay there until we disembark.
We were on one Celebrity ship years ago when a verbal altercation broke out in the theater. Security was there as soon as the voices were raised and escorted everyone involved out of the theater.
On another cruise an older man fell down the steps. Crew, officers and security were there before he could even attempt to get up.