88lance, I would have to say it is not being sneaky but being discrete and not making an issue or spectacle. If they see you doing it or have to respond due to a complaint then that is one thing. But, I doubt that any police department is actively hunting down drone fliers who are not causing problems.
The Jurisdiction are confusing and there is a difference between FAA airspace restrictions, Federal & State laws and municipal ordinances.
Some applications would be:
1) All law enforcement no matter the jurisdiction have the ability to to cite, seize and arrest. It is up to their discretion or department policy on how to handle the incident.
2) Flying in an FAA restricted airspace without authorization could be a felony, misdemeanor or citation which could result in a significant fine or jail/prison time. The FAA has the resources to investigate and knowledge to prosecute.
3) National Parks are federal jurisdictions. From my understanding Rangers in general take an educational approach and inform you about the law. Rangers are law enforcement officers but where you could be potentially prosecuted if a verbal or written warning or fine were not deem sufficient could be either in the Federal or State. If it state you would be prosecuted in the County for which the park is located in.
4) State laws, as a resident of California there is a State law that prohibits flying over Correctional Institutions such as jails or prison. It would be likely that if a pilot was lingering or intentionally flying over a jail a prison in a nefarious manner that they would be prosecuted.
5) City and County Municipal Codes, would typically be handled by the Sheriffs or local police. Municipal codes for the most part are misdemeanors with a maximum of $1,000 and no more than one year in jail.
6) Independent Jurisdiction, such as preserves, parks and open spaces are allowed to have their own ordinances. Typically the rangers or patrols are not law enforcement and would need to contact the local jurisdictions to arrest. They do for the most part have the ability to issue citations.
With all the long winded break down of jurisdiction covered, the reality is if you are flying safely in an area that is not a no fly zone, FAA restricted airspace without authorization and/or somewhere would good sense would tell you not to fly plead ignorance of the specific municipalities ordinances or laws. The FAA does not care about local ordinances and are not going to invest the resources and time. Flying over a jail or prison or in a no fly zone will probably be a problem for the pilot as it difficult to claim ignorance.
So to answer your question about do most Cities not care. The city is rarely the entity responding, it will more than likely be some form of Law Enforcement. Most interactions with law enforcement for these type of municipal violations are just a conversations and informing the pilot of the ordinances. I have had several of these. Never has it never been more than a friendly conversation. Most of them are just there because someone called and it is their obligation to respond.
That being said, I was never doing anything that would be considered exceptionally dangerous or reckless. I use the term "exceptionally" because some people have the belief that all drones are dangerous. It can be inferred that most of the calls on drones come from those people or the self appointed ambassadors for public indignation and self righteousness.
I think enforcement of drone ordinances is almost entirely subject to recklessness, harassment and your disposition. The first two are cut and dry. But if you are being reasonable and fairly safe then it falls to the Law Enforcement Offices discretion. My philosophy and experience is that worst that will happen is I will have to prematurely end my flight and not fly in that area again. But I also am non confrontational, don't come off as a know it all legal eagle and do not argue with what they ask. I always make sure I am in open airspace on Airmap or have FAA approval. I then acknowledge my municipal error and thank them for the information.
For the most part police do not want to ruin your day or do paper work over something like this. Be cool, be nice, be friendly, be respectful, be humble to your own "ignorance" and do what they ask.