Haven't heard of this issue in the US. Have yet to experience a private landing fee at restaurants, hotels and golf courses, etc. But we do suffer from a related issue, which is that certain venues will require two or even four times the amount of liability insurance that you would normally have. These are typically large venues like stadiums or casinos, but sometimes also town fairs and the like. So you've got to go negotiate with your underwriter for a temporary increase. Most of the time not worth the effort or the expense. Sometimes they even ask to be put on the policy by name.