If you do not have a GMRS license for those channels and fail to use your FCC callsign, you are breaking the law

Other countries have stricter laws and I have heard about some tourists getting into trouble using radios like this.

Many (perhaps most) users violate Federal law and use them without license, but who knows what enforcement will be like in the future

I plan to use them for car rides where we have to take 2 cars to fit everyone, as well as when my kids go to their grandmothers in town so they can still talk to us without having to use the phone