You expect right. Steve and I are moderators so we're here often, lucky for you 
Anyhow to answer your question, I don't think WGU will teach you how to pass a certification but will accept a certification as proof of competency. I think it might be good to knock out as many as you can before entering the program only if you get some form of acknowledgement from the university that they will give you credit for those certs. Be specific. Ask them how long you can have the cert for and it still be considered valid, ie does it have to be less than 3 years old. Ask them how many credits will transfer in from each cert... ie a gettin 2 credit hours to try and fill a 3 hour class isn't much help. Ask them the maximum credit transfer from certs will apply towards the degree. Lastly make sure you know which certs they will accept. MCSE? Project+? Security+? CISSP? CCNA? etc.
Then check witht the certification vendors to make sure you qualify to attempt the exam. For example a PMP requires a BS and 4,500 hours of experience in project management for not less than I think 18 months and 30 contact hours of training. That's a pretty strict requirement. You can attempt it with less than a BS but the hours and months of requisite experience go up.