Longest vacation without care?

Perfect! Cool friends help a lot. Even a check in and a phone call saying "It's all good" makes a trip a lot more enjoyable and takes away the worry.

if you got your temps and humidity working properly and if you can guarantee them a water supply you can got on a vacation for 3 months for all the snakes care :D .. if they dont feed them they won't poop nor pee .. I have had snakes go off feed for 8 months (in that time she peed like twice) and still remain completely healthy .. there is no no need to worry
enjoy your vacation :)