Kind of. You just start using data for those 2 days and then shut it off when you're done. You'll see the pay per use charges on your following bill. The rates differ depending on when you got your plan.
Make sure to call Koodo and ask them to remove your data block, if you have one. While you have them on the phone, also ask them what the pay per use charges will be!
My friend have a plan without data ( she has a talk&text plan ) and she didn't know she could use WIFI to get internet access.
Just turn on the WIFI on your phone and sign into the wifi network when it available. ie: MacDonald, Tim, Library..