Thomas:
As I have said before, I know that I, as a customer, will pay the service personnel one way or another. I prefer the "tips included" method --- not for myself but for the crew as I know many guests "stiff." And also as I have said, I have no problem with taking a cruise with "suggested tipping amounts" and "going along with the program." I've been on many such cruises, had great service, and tipped well.
Thanks,
Richard