How many lunches are you making? 2 days for rolls in the fridge should be ok as long as you warp them straight away . I could put together DS2s packed lunch in under 5 minutes, it wasn’t fancy but it was eaten which is the point really. Rolls are much easier to prep and didn’t come back as crusts. Slice of ham (or chicken/ cheese) plus slices of cucumber in rolls. Add a fruesli bar/cake/mini cheddars and a satsuma or a carrot, Job done. And frozen sandwiches, do not go there! Rolls freeze well with no filling and defrost in 15 secs in the microwave. Much nicer than slimy defrosted filling.