I wish I could do the shower thing but we have a water softener. I use a brita pitcher to filter the water and use that to water.
I have all of my orchids on a really good metal shelf that allows everything to drain and it has wheels so I move it outside to water it and then move it back in when temps are too low or too high.
I already asked one friend to look after them and it scared the bejesus out of her lol. She pretty much said hell no I'll kill them. I think she knows how fond of my orchids I am and she has to listen to me incessantly talking about them so she is paranoid.
I think I'll move them out and have my neighbor water them once during the week. Hoss needs to be watered every two to three days right now so that is the one I'm most worried about.