Hello, complete gas newbie here so please go easy on me. Do I need to buy a pressure regulator in order to use this grill? Like this one? : https://www.galaxus.ch/en/s4/product/campingaz-druckregler-cgs-bbq-spare-parts-6196465 If I do need a pressure regulator, does it have to be that one specifically or can I purchase a "generic" one? About the gas bottles: according to other members, it seems I can use "generic" gas bottles and not just the ones from campingaz. Do I need a pressure regulator for regular gas bottles too? Is it the same? Can I really buy any gas bottle from any shop? I prefer this "non-CV" version of the Party Grill because I'm assuming it will be cheaper to run if I manage to use regular gas bottles.