Winter travel with kids: How can I teach my family basic Japanese phrases for our Nagoya trip?

Hello fellow travelers! I'm a parent traveling to Nagoya with my kids this December and I want to make sure we can communicate effectively during our trip. I'm looking for fun and engaging ways to teach my family some essential Japanese phrases before we go. Do you have any recommendations for language learning apps or resources that are kid-friendly and suitable for beginners? I want to ensure that my children feel included and confident interacting with locals. Any tips on how to practice together as a family and make it a fun learning experience? Thanks in advance for your help!