Installing a watering or sprinkler system is worth the trouble, expense and lack of heartache after time away from your plants... You can still have a neighbor or friend just visit to make sure everything is being watered....
A simple hose attached to a timer and a raised toro head can cover enough area to congregate your potted plants and keep them alive as you enjoy a few days vacation...
However I, do your feel you pain, I have returned home from travel and a visit to the backyard turned my trip upside down. Stuff happens when you're not around, especially if there is wildlife in your yard....
Gene, hope your plants just start throwing out new foliage asap...
Ben