When a food truck owner or employee comes around asking how you like their food, it’s likely you don’t give them an honest answer. Don’t be embarrassed, everyone does it. You want to eat your food in peace, even if that means telling the inquisitor that their sub-par food is “very good”.
When you leave reviews online, you can be as honest as you want without feeling embarrassed. Good owners analyze reviews left by their customers and use them to improve. Customer reviews help food trucks understand their customer and change their service to better serve them. Even a bad review is a service to the vendor because it gives them honest feedback and ways to improve.