The aim of this report is to highlight 'what' (jak masz na mysli ktorzy- to lepiej 'which') customers like supermarketS and TO identify the main problems OF supermarkets.
The 'supermarket offer' (albo 'the supermarket offerS' albo 'the supermarketS offer') low prices And huge choice. There are thousands OF productS. There are many places to 'car park' (nie, lepiej ...to park the car)
On the other hand, customers might find some things disappointing (such as..?).
'There are not polite staff'-to zdanie jest niegram - Powinno byc...The staff are not polite). The 'largest' (nie- kolokacje z 'problem' to tutaj lepiej 'the biggest problem..)are THE 'large' queues.
sum...nie sump...advantageS than disadvantageS