Not sure what city you're moving to, but I live in San Francisco and I've been very disappointed in how often I can't find an open hotspot. Perhaps it's just me?
I was just out there visiting and I was surprised by the same. Berkeley was less of an issue. It does seem like there are a lot of closed wireless networks in San Fran that you can buy a subscription to. That might be another option if you don't need so much connectivity to require the Verizon Mifi.
I'm going to Philly. My school provides wifi for students throughout the entire area of my college, which is pretty sweet.