A question of etiquette perhaps?

I would like to pose a question of sorts. Lets pretend there is no covid and you invite your adult children round for Easter dinner, full roast dinner. Would you expect them to offer to bring something? or if you were the person being invited, would you make that offer? or would you just turn up empty handed.
The reason I ask is, my husband has put on Christmas dinner, Easter Dinner and many occasions in between for our family and with no exceptions the only one of my girls who has ever asked if they could bring something, or actually brought something off their own bat is my niece (who is more like another daughter than a niece).
It doesn't annoy me as such, I was just wondering if this was a common occurrence in other families