Steve, congratulations on your dowiana having a bud... Grrrr...
Dave, I'm sure hoping that they don't need more light than what they're already getting. Those two plants are sitting between Vanda tricolor var. suavis and Aerides odorata, both of which are in bud (meaning that if they require more light than the light-demanding vandaceous species that I grow, I might as well throw in the proverbial towel and swap them for something easier to bloom--like Euanthe sanderiana!
).
Steve