Help with basic Japanese for Hiroshima trip with my kids?

Hey everyone! I'm a bit nervous about our upcoming family trip to Hiroshima this December. I want my kids to have a great time, but I'm worried about language barriers. Can anyone share essential Japanese phrases or tips for communicating with locals? I want to make sure we can ask for help if needed and navigate the city smoothly. Any suggestions on family-friendly places where language won't be a big obstacle? Thanks in advance for any advice!