Sausages and burgers on barbys will get eaten
YY to this, we often cook extra sausages to have for breakfast the next day. You could even have a BBQ breakfast or brunch. Or get a Kellogs variety pack or big box of a treaty cereal.
Weather should be good so lots of BBQs, stock the freezer with ice creams from the supermarket. Maybe something like an M&S dine in deal for you and DH to have a nice meal together one evening?
Surprised at all of the pizza replies
Why, it's a very popular food and also very quick and easy to do - just get your favourite supermarket version to stick in the oven. Very little washing up too, so perfect for the OP who wants to feel like she's on holiday at home for a few days.
So the main thing would be whatever food you like that's easy to prepare and clear up afterwards, so you can have a more relaxing time. You say the DC won't eat salami and olives, but there's nothing to stop you putting out a mixed buffet of things like this, plus whatever your DCs like, Babybels, ham, crisps, nice bread, whatever.
Will you also be having some trips out? Theme park, beach, NT place, whatever is accessible and open?