The Included Software section in the Tech Specs of the MBPs on the Store specifically states that iLife is included. That comprises iPhoto, iMovie and Garageband.
Those will be found in the Applications folder. If your Mac did not have them, you should inquire with the provider why. Those in a sealed box from Apple Stores come complete, but some open box offers from other sellers may have been altered.
You can also run the App Store application, visit the Apple Software section and check that the iLife components are downloadable/installable without a charge thru it. You will have to authenticate with the AppleID used to register the Mac.