Sorry MJSK, the original does not seem to be on the web anymore ,but a number of sites have copied his info . just type in miltoniopsis jim kennedy
Regards Des
In reply to watering while away, I place my orchids in containers of water: roasting pans , large trays and so on. When I return I take themout and wipe the pots dry so as not to get mold or bacteria growing. It seems to work fine.