Don’t take everything with you, take the opportunity to explore and do some shopping at the local butcher/baker/greengrocer/deli etc. for inspiration.
Steak & kidney pie/Cornish pasties with sweetcorn/peas.
Local sausages/bacon/black pudding and do a Full English Breakfast as a tea, with baked beans, mushrooms, eggs, toast etc.
Pork pie/quiche/cold chicken with coleslaw/salad.
Fresh burgers with good bread/bread rolls (use disposable bbq as a PP mentioned).
Do an “afternoon tea” as a meal using a decent loaf, ham, cheese, tomatoes, olives, pickles etc. for sandwiches, then a selection of cakes for afterwards.
And if the other adults won’t cook, they can clear away and wash up. And send them to the chippy/takeaway a couple of times!