I never enjoyed this aspect of self catering at all.
When dc were v small & we stayed in apartments etc we'd have easy breakfast at home of cereal & toast & fresh juice, nice jam etc for dc & often dh would go out & get fresh baked goods- pastries / croissants & nice take out coffee for us
Lunch was always out. Often in a gallery / museum cafe or we'd research nice restaurants/ cafes in the area. Dh & I would often have a beer / glass of wine.
We'd usually go places where the dc could have a main meal - fish & chips, proper burger, chicken pie, homemade pizza, Italian etc so I could relax knowing they'd had a decent meal. We might have a salad or something lighter
Afternoons usually involved a stop at an outside cafe for ice Cream or cake etc
Back at the apartment we much rustle up something like scrambled egg & toast/ bacon bagel / pasta etc for dc with a glass of milk
Dh & I would have wine & cheese or a takeaway which the dc were always welcome to share but often didn't want as spicey or they'd eaten enough
Depending how long we were away for we'd eat out maybe every other or every third evening too
When dc v young they were in bed when we'd have takeout & a drink so we got to relax & having the space to do this was the only advantage of self catering
Now dc are teens & we just stay in hotels & eat out
I really wouldn't be interested in actual cooking or taking frozen dinners from home