I'd just confer with DH each night and have HIM give them a list of things that skids are expected to have accomplished by the end of the day. That way you aren't the bad guy and YOU don't have to get annoyed because you've asked them to do something and they did not, and then have to do the whole tattling thing. If the crap isn't done when DH gets home, then he gives them a consequence.

Of course given your DH made the comment "but it's their days off from school" I have a feeling this will all be an act of futility.. but it's worth a try.

If I were your husband I would give the kids a list of chores a few daily ones and a couple of larger chores, noting impossible but some useful jobs that will keep them busy for maybe an hour a day or so. Then I would tell them that if they get all of the chores done then the last day of their time off school he will give them each $50 or so and they can have the day out at the mall or movies or whatever would appeal to them. That way they will be motivated, they will do a few jobs so you aren't annoyed, their dad will hold them accountable not you and all with the bonus of getting them out of your hair for a day too.

Decide what you want, and enforce it. Nicely, but firmly.

I have DD2. If I put myself in your situation, this is how I would handle it.

I would do normal breakfast with DD2, and possibly go to the park with her first thing so the skids can sleep in. When I come back at 9.30 for morning snack, I'd wake the skids up and let them know it's time for them to come to the table. I'd stand over them until they're out of bed, then let them wander down and either make their own meal or have fruit with me and DD.

After that, I'd let them decide if they want to help with chores inside or outside, and DD will come with me to do the same. Expectations low, but enthusiasm high and no electronics. I'd check in on them about every 20 minutes (DD's attention span, lol!)

After about an hour, I'd see if they want to do more chores or if they are going to sit at the kitchen table to do homework. No electronics.

Lunchtime, they can help prepare or help clean up. Just sandwiches, usually I just bring everything to the table and everyone can help themselves. But we all sit together and chat. No electronics.

After lunch it's quiet time. They can be on their electronics or in their rooms or reading or whatever, but with minimal noise.

Then it's homework time. Just an hour or so, but I'd be sitting there with them, helping if needed but mostly keeping them on track. No electronics.

Then snack time, they can help with prep. Veggies and dip, that kind of thing.

Then they can do whatever they want until dinner.

I just realized I am assuming they are 4-10, but if they are teens maybe they have already made plans to hang out with friends?