There was thread about this about two weeks ago, a lady said she had cash taken out of her safe, I think it was about $ 400.00. I have used the safes at various resorts and have left cash and have no problems. You control the key and I would think that Mgt. would have very tight control of a master.
We've never had a problem with the safes. I keep all of our cash in the safe. My husband has epilepsy and takes over 30 pills a day. Needless to say, ten days worth of medicine is quite a lot. I always lock it up in the safe too.