yes, and no. It depends on what you want to get out of it. If you are planning going down the Swift route or are working with Apple APIs the labs are amazingly worth it. You get to take your code to a lab and talk to an Apple engineer about it. If that isn't something that you are interested in, perhaps the value as a system administrator is a bit lower.
The best way to know is go to WWDC once, and gauge what you personally get out of it. you'll figure it out better than any of us will for you
