hmm, I'm in 2 minds on this.
On the one hand I agree with spoonblender, and it is perfectly normal.
On the other hand, mine have always had to help around the house, and it took a lot of effort to hold the line as they reached teens, the arguments about how it was unreasonable fell on deaf ears, and eventually they accepted that if they want to eat , they have to pack the dishwasher and clear the table. In the holidays they get given a job to do by dinner time, eg stick on a load of washing, hang up a wet load, hoover the stairs etc.
one of mine is much more beligerant about doing it than the other two, but it all gets done in the end.
Lot sof things I choose to ignore, they know, after years of repetition, that they need to take their stuff upstairs, bring dirty crockery down, and if it isn;t in the laundry basket, I don't wash it.
BUT mothers day is crap, because they kick against it, because it is 'expected' My dh is in charge of birthdays and mothers day etc, he makes sure they are sorted on Friday/Saturday. I think your dh needs to step up actually. Your last post about 'just leave it' you need to pick him up on this - just leave it TO WHO. To YOU. So if he says just leave it - ask him - are YOU going to clean up after them, do the dishes etc, or do you mean just leave it, mum will do it? Because unless he is prepared to pick up the slack, he cannot tell them that!