Official law mention that at every address a foreigner needs to be registered within 24 hours of arrival. Many Immigration offices understand that for a night out or few nights out, there is no need to register on a daily basis, but this flexibility of the Immigration Officer is NOT a law or rule.
What ever you try to avoid by using somebody else to book rooms, or driving license or your
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card is your own personal freedom and your own risk to take.
The only one who can tell you if you need to register again and again is the Immigration Office in your area, not every office is as user friendly as the one in your district, but all of them do not shoot when you just ask the rules and regulations. Take care.