First, uniquepainter1, welcome to FT.

My first thought on your issue is that every city/county/state may have different laws on how/when/where taxes are charged. And while I suspect that most areas will follow the pattern you have seen in the past, it may be that not all do (and in this case maybe where you have your current long-term stay.) So have you checked with the local laws to verify that 30 days or longer stays do in fact reduce or remove certain taxes from your stay.

I would suggest reaching out to one of the Marriott Bonvoy Lurkers to help get you to the right place to verify what the hotel should be doing. Note that one of the Marriott Bonvoy Lurkers has actually responded to a post in this thread. There are a few of them (Marriott Bonvoy Lurker, Marriott Bonvoy Lurker II and Marriott Bonvoy Lurker III). You can PM them through FT system or you can directly email them at [email protected].

Good luck with getting your issue dealt with and do come back and let us know how things turn out.