I have a few Rhipsalis myself, i love the unusual look of these plants.Mine are all outside in partial to filtered sunlight.You have to introduce the sunlight slowly or they will burn.They turn a beautiful red after being in some sun.I find it helps if you can get them IDed correctly research where it's from & go from there.My R.'sulcata' bloomed for the 1st. time this year.
I also hang mine under tree's so they are sheltered some from rain,wind,sun.
Hope that helped!!!