I never go out for my meals on holiday either.
I buy grated parmesan and a small bottle of lemon juice if I have a meal in mind that requires either one. No need for a grater or an actual lemon therefore.
Meals I've cooked when on holiday include spaghetti and meatballs (mince, breadcrumbs, egg, S&P, Italian herbs, crushed tomatoes, garlic, spaghetti, olive oil, ready-grated parm), chicken in a wine and cream sauce with mushrooms (self explantory), pork paprikash (pork tenderloin cubed, green peppers diced, onion diced, paprika, beef stock, S&P, sour cream, egg noodles), fried fish with steak fries (from a packet), chicken Caesar salad (bought cooked chicken, packet of croutons, olives, sliced onions, made dressing), salad nicoise made with fancy tinned tuna, boiled new potatoes, egs, tomatoes, onion, etc, and assembled easily.
I like a colander and a salad spinner in any SC place I go, but I definitely aim for quick and easy recipes using ingredients that are easy to buy almost everywhere. I also like to minimise the number of pots I use because who wants to spend their time in the evening washing pots and figuring out which ones can go in the dishwasher.