So true, Ibis. You don't have to walk them or pick up (much) after them either . . .
Lindsay, my Vandas are on a misting system that has a timer. I never have to worry about them getting watered every day. I had to do this since I travel too often to expect someone to worry about spraying orchids. I installed it myself using micro-irrigation supplies. It's easy, cheap and fun to do. My other orchids get misted on the regular yard system every 3rd day. I adapted a couple of the regular sprinklers to feed micro tubing for those guys.
The morning misting isn't quite enough if we get dry days in the summer, though. When I was away in August, DH was here and if it didn't rain, I did ask him to give them a good rinse with the hose. He was ok with that. But it rained at least half the days, really nicely so it wasn't a headache for him or for me.
I absolutely do add the Epsom salts to my regular spray fertilizer regime at least once a month, and sometimes twice in summer (when it gets rinsed off by rain).