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D. Easter Parade = D. Mini Pearl x D. xdelicatum (which they list as speciokingianum for some reason. xdelicatum is a well-recognized natural hybrid between D. kingianum and D. speciosum.)
D. Mini Pearl = Dendrobium canaliculatum x Dendrobium bigibbum
So all the parents are Australian Dendrobiums. Mini Pearl's parents are warm all year. bigibbum can have a dry winter or get some rain. xdelicatum's parents get very cool and dry winters. It is probably not hard to keep your plant alive whether you keep it warm or cool in the winter, and water or not. I don't know what it needs to be assured of blooming.
I saw while searching that a lot of people in southern California have awards on it, so I suspect it likes California winters - cool but not freezing, mostly very sunny. If they grow it outdoors it gets cool rain.