Using phone abroad

I'll be going to Finland in a few months and I was just wondering if it's possible to use my Droid X2 as a WiFi only device while I am there. I don't need to make calls or send texts or anything, I just want to be able to use my apps, play games and browse the internet. Can this be done without being charged for anything like roaming costs or something like that? I'm not exactly the smartest person when it comes to all that and I don't want to come home to a huge bill. Any help is appreciated.