I suppose that at the end it is a matter of your personal preference, since I make an effort to keep track of all the money I deposit and withdraw from a casino.
But being completely honest, this is something I do with all my money, the reason being that unless you keep track of every single dollar you are spending, it is difficult to notice where you could make some adjustments that could allow you to spend less money, while at the same time you maintain the quality of your life.
Yes, that will be personal decision to track of all the money they used to playing gambling. We can tracks the money but we can leaves it like that and not tracking the money because we thinks that the money is the money we can afford so we will be okay if the money is lost in gambling.
The important things is you knows how much money you will used to playing gambling and that money is the money you can afford to lose in gambling. You don't have to feel regrets if you lose and don't thinks to trying to recover the lose because you knows the risks of playing gambling.