Yes, of course! I think I mis-stated what I was trying to say. I understand why new cruisers would ask about such a thing. What I don't understand is why there is such a persistent myth about having to have cash to tip room service as being the singular situation where you need cash on board, when the reality is that you can easily charge room service tips to your stateroom account, just like any other charge on board, even if it's a $0 ticket.
I'm not sure where the notion to the contrary comes from, but it seems to keep coming up. It appears that some people have a strong, almost emotional buy-in to the notion that you must tip room service with cash. We see in this thread that someone makes a point of locking up their room service tip money in the safe. I've seen in other threads where the family makes a point of having a special envelope with room service tip money that's kept in a designated position on top of the desk. Yet another thread talks about the pre-cruise ritual of having to go to the bank and getting a large supply of $1 bills for this purpose.
Some people seem to "get off" on the notion that you must tip room service with cash, and I just don't understand it for two reasons: 1, it's an odd thing to be fixated about, and 2, it's not true. If some people prefer to tip room service in cash for whatever reason, well of course there's nothing wrong with that. But to falsely believe that it must be done that way, and then make a big production about how the cash tip is handed, just seems a bit odd in the larger scheme of all of the details that are involved with a cruise.