Complex sentence: There are numerous supermarkets-Woolworths being the best, however in peak season food in Woolworths is often sold out by mid-day, you are advised to do your shopping as early as possible.
Split into simpler sentences: There are numerous supermarkets-Woolworths being the best. However, in peak season, food in Woolworths is often sold out by mid-day and you are advised to do your shopping as early as possible.