I do not go for any cashback offers unless it's a really good one, like a 50% Cashback for losses. 10% offers do not attract me at all simply because I hardly ever deposit big enough to get any good returns.
My regular Asian casinos give daily rebates for raw cash losses but the amounts are too little each day, so I let them accumulate before claiming them. There's no limit to how much I can accumulate and no timeframe either, so that's good enough for me!