I'm not a Vanda grower, because I too am a windowsill grower in the Northeast, but heck if you were gifted a Vanda, let's make a go of it!
Ren. Mem. Marie Killian has a gorgeous red flower, and it's enough to inspire me to make that plant happy!
Your plant is nearly 70% Ren. storiei, which it mostly resembles:
According to Jay's encyclopedia (where the pic comes from): "This genus is comprised of some 15 species from SE Asia to the Philippines. They are best grown in wood slat baskets and as a rule like partial to full sun and unlike Vanda, less water and fertilizer after blooming. Otherwise their growing habit is very much like Vanda."
As I say, I'm not a Vanda grower, but I'd think a slat basket for exceptional air flow, but good NZ sphagnum around the roots to hold some moisture in. PM me if you want a moss source.
I'm winging it here, so Vanda growers, please chime in!