With no previous plumbing experience, I successfully tied in my sprinkler system to my main line, installed a new main shuttoff and replaced a section of old ailing pipes. 60 connections in all and no leaks!

My question: If there are no apparent leaks now am I out of the woods, or could a leak start in a few days?? In 1 week I'm going on a 14 day vacation. I'd like to leave the water on so the sprinklers will run, but if something started leaking and I didn't get back for 14 days...