If you're a good customer, you're a good customer. That goes for whether you are playing online or in a land-based casino. And casinos certainly appreciate their good customers. That is reflected in the [policy they employ when they take measures to keep you satisfied, but those policies differ according to whether you have your computer turned on or not.
When you play in a land-based casino and are known to gamble large amounts of money, you might get the opportunity to be extended casino credit. This credit has its minimums and maximums, depending on your established level of play, and generally the credit can be used for games that are played against the house, which means it is not used for table poker. There are advantages to this of course. For one thing, you don't have to carry a lot of cash when you enter a casino, and thus you are not susceptible to, well, being robbed or losing the cash through misplacement. You also have a number of different ways you can pay back when you have to. You may be able to give them a personal check, cash or bank transfer in order to settle up. What happens when you have credit is that you establish a marker whenever you sit down to play somewhere. And your winning/losses are tracked.
There is really no process for casino credit when you are playing in an online gaming establishment. You are generally required to deposit funds up front, and this can be done through a variety of different means. What happens with the online casino is that you are eligible to receive the benefits of bonuses, which can be added to your real money accounts after you have met certain wagering requirements.
There is another very strong fundamental difference between the physical and virtual casinos from a credit standpoint that might point you in a specific direction. It would be a very rare occurrence that you would not have to go through an approval process when you are seeking credit from a land-based casino. You will have to give the casino a date of birth, a social security number, and a certain amount of bank information as part of this application process. A casino will know your account number, from at least one bank and maybe more. You are also, in effect, authorizing them to look into some of this financial information.
In the online casino, when you open an account you can do so by giving them your financial information, for sure, if you want to use a credit card or do a bank transfer. But if you want to use an electronic wallet, you have a "go between" and don't hand over that personal financial information over to a casino. if this is a concern of yours, you are probably better off eschewing the idea of credit at a land-based casino and going online, where you can get a bonus.