What would make this pilot assume he would even have the permission from a gulf course to even land there in the first place or that a big resort like Marriott wouldn't care is the question in my mine.
Pilots like this guy don't do GA any favors in my opinion.
I land at alot of private fields and grass strips but I drive by or call for permission first and have never been turned down. I only had one owner wanted me to drive by first so he could show me the bad spots.
Just asking permission will get you and the owner what you both want. It has worked great for me.