Verizon's LTE phones are all SIM unlocked already. There are a variety of SIM sizes, I believe the 822 is a micro like my 928. My old Trophy and Z6c had mini size SIMs. I did need an unlock code for them as they were just 3G (the LTE phones are unlocked due to FCC conditions on an auction VZW won).
You can also cut down SIMs or get adapters to size up, but I expect you won't have any trouble finding a micro-SIM for your phone over there. Download the Access Point software before you go, should help you connect.
Hope this helps.