We often get those also. Cabin attendants visit suites after cruisers have left and gather unused toiletries to give to cabins that they know do not get them. It might help their tips. We never use them as we carry our own, but put them on the counter for him to reuse.
Yes. We had a connected cabin once where the couple seemed to always leave bathroom door open when one was using toilet so they could talk. We could hear everything the said + some other rather unpleasant sounds. Never again!
We keep telling specialty restaurant managers the same. If they offered a price for a limited menu we would eat there every night. That having been said, go enjoy the experience and your meal. Eat what you care to and see how it goes. Enjoy your cruise.