yeah i also gamble with my mother and with my relatives too but just at home. I never experienced gambling with them in a casino and i dont think its appropriate to gamble with my parents in such place. Although i did gamble in a casino with my cousins and siblings already.
Nice family bond, I have experienced to gamble with my relatives but AFAIR I haven't gamble together with my parents, both of them.
With that kind of gambling, it's not really serious because it's just a way for you to enjoy everyone's company.
Its fun to see your family enjoying the games especially when they are earning but it depends on every family situation because if your family ask you to gamble and focus on money then its bad, you are being forced to work and not to have fun at all.