It's really not that critical, as long as you're not pouring water on them every day. In winter my RicRac gets water very seldom, generally only when it rains. In hot weather like we've been having, it might get rained on twice a day, but lightly as it is partially under a roof overhang. I don't grow Hoya (which is your 'rope plant') but I believe they are similar.
As long as you have them in a very loose well-draining medium, NOT potting soil, and they can dry out between waterings they will do just fine.
