Amsterdam, Dublin & Wireless Data

I am heading to Amsterdam this week for our Structure Europe conference and super excited to host our first European event. And following Amsterdam, I am taking a brief trip to Dublin, which has been on my bucket list of places to visit. 

Of course, every time I travel overseas, the biggest part of my travel expense is the phone bill. Actually it is more like my data bill. The roaming data is so damn expensive and I come back facing a big bill, despite signing up for the biggest bucket on offer by Verizon or AT&T.  In addition to the iPhone 5, I am thinking about carrying my iPad 3, but not sure if I should. I do have a Verizon version of iPad 3. 

I am looking to spend about six days in that lovely city. I know wifi is an option but I am not sure about free WiFi options in Amsterdam. I am just trying to wonder if you have any suggestions on how to best handle my visit to Amsterdam.