Ds1 did combined science, there is no room on the timetable for triple so the student is expected to do all the extra work at home. Doing the combined meant he aced it with a 9,9 and now does physics A level.
He said that a lot of the other A level students have done triple but my son is not struggling at all. I think the issue with A levels isn't to do with whether you did the combined or the triple but the grade you achieved.
Obviously if you are sitting the triple then school expect you to do well in it. The minimum required grade for any of the sciences at A level is usually a 6 as a general rule of thumb.
Re universities looking at GCSEs, only Oxford actually consider your GCSEs, Cambridge want you to sit an entrance exam ie STEP for maths. Cambridge felt very strongly that attitude to learning is best demonstrated through AS level results, as these have now been scrapped their entrance test came in. This is information I have gained from MN.
Ds1's predicted grades for A level were based on his GCSEs so his grades are high. His friends only put effort into those subjects that they were going to take at A level, so they got 9s in maths/science/History etc but 6s in English and French. Surely if you are looking at grades then their A levels will reflect a better idea of how well they are doing.
Re work load, History GCSE is heavy, as is Geography. They tried to persuade Ds2 he could take both but he had seen the volume of work for History from his brother so it was a no from him.
Re language. We tend to hate the things we are not good at. Ds2 was asked at parents' evening if he had done French at primary school. No not really but he does do a language app daily and has done since year 7. HTH.