For me as well (have to whisper this bit in case my brother hears me) cruises!! I do not want to be trapped on a boat going from port to port. A voyage from say Southampton to New York with no stops I might consider but definitely not a tour cruise.
The my brother bit is because he and his wife and a two more of my brothers are always saying 'You'd love it our EB. You get waited on hand and foot etc., etc., etc.,' I don't want waiting on I'm an independent woman I can turn down my own bed, go to the bar on my own and clean my own bathroom thank you very much!!! :-) JMHO