I am going on my 1st cruise dec 2nd and i have read on here to make sure you use you luggage locks and for added security put cable ties on your bags. Question if i do all this and they are now searching bags are they going to break my locks and all or do they just have dogs sniff them?? This is for my checked luggage. Also do they search you personaly when you go onboard?? Like with a metal scanner or what, i have never flown and this is my 1st cruise so i am wondering, I want to take nail clippers to cut off the cable ties but don't want them to take them from me?? Thanks so much..