Hey Happycamper-
Was it a fully enclosed one, like a rubbermaid tote? I imagine it'll be fine, and it would be just in the beginning while they are still small. With any luck I could start flowering after 2-4 weeks and shut the power off to harvest after another 4-5, before I have to leave for 4 days a second time later in the summer! Better than to leave a huge plant for 4 days. It's my first so I'm not sure how many weeks everything takes? I know it varies, but generally speaking does that timeframe sound reasonable?