We've been using a Cadac for eons, both on campsites and fitted to the bracket on the rear wall of the house.
Only clean it once a year, generally October as that is a gap before winter caravanning starts.
We cook all sorts on it, from burgers, sausages, steaks, fish. A favourite is start by getting it hot then add finely sliced sweet peppers, onions, tomatoes, mushrooms and sprinkle with crushed garlic. Caramelise the veggies, add the meat say finely sliced chicken. Par boil and thinly slice potatoes to form circular 'crisps', add to the Cadac. Serve with chilled white wine or a G&T.
In the morning do bacon, sausage and fried egg. Put the lid on and repeat for next meal. In October clean the Cadac.
Don't let the girls look after it whilst you refill the aqua roll, or other tasks away from the caravan whilst cooking if you use wooden spatulas; the girls set fire to my spatula through not keeping an eye on the cadac and gassing