I've been to that Verizon store several times and I have to agree with the 50/50 comment. There are a couple good, knowledgable people working there that can truly help. However, I have had folks treat me pretty badly. Worse part, in most cases they just didn't know what they were doing or talking about.
You're almost always better off calling Verizon support. You might wait a bit, but your chances of getting someone knowledgable is much greater.
Posting on this forum is good way to get phone advise... Plus, we know how to use Google too...