I can see from your other posts that you are doing your research. This is good. The more you know before you go, the less chance you have of nasty surprises. Many, if not most of the problems we read about here are the result of a lack of planning. You can't plan for EVERY eventuality; but you can be ready for most of them. And a roll-with-the-punches attitude, and the realization that "thing's happen" will get you through the rest.
Do try to take your daughter on a cruise. Traveling solo has its own special advantages. But having someone to share the trip with is wonderful too.
Best of luck.