There is another thread with a voucher code for a free Guosto box - it might be worth signing up, it won't feed all of you but will give you the ingredients and instructions for some meals.
I'd be tempted to do a buffet every day with the addition of one or two hot dishes.
Do you have a slow cooker?
Buffet
Salad(s)
dips - humus, baba ganoush, bread sticks and veg to dip
quiche
pickles
nice bread
You get the idea.
Then in the slow cooker make a vegi chilli and a load of baked potatoes.
I make a simple fish stew - you need a quite 'meaty' fish, cod, fresh tuna, hake, mackerel - or a couple of them
Put in the slow cooker with a pack or two of passatta, salt and pepper and any herbs you like, serve with rice. If your slow cooker is big enough you can put rice and water (1/3 rice, 2/3 water) in a zip lock bag and put that in the slow cooker.
Foil parcels - if you do individual ones you can cook vegi, meat and fish.
I would use quorn for the vegi other wise chicken (skinless thigh or breast) and salmon. Garlic puree, 1/2 a lemon per person and dried oregano.
Get squares of foil, put a bit of spray oil on each one. Start with the quorn so you don't cross contaminate.
Put the protein in the centre of the foil, squeeze garlic puree out onto the protein and use a knife to 'better' it so it is covered - it looks too much but don't worry. Cover with the dried oregano to make a sort of crust then cut the lemon in half. Cut a slice of lemon and put it on top of the 'crust' and squeeze the rest of the lemon juice over it. You could use lemon juice from a bottle and just use the lemons for slices.
old the foil until you have parcels, I normally cook them for 20 mins in the oven put if you have 8 parcels it might take longer.
Serve with new potatoes and green beans.