It’s interesting how I’m an Ambassador guest who also requires excellent and constant air con for any hotel at which I stay—so much so that I get a guarantee in writing or identifiable manager on the phone confirming the hotel room/suite can maintain 67 F or cooler. And yet I’ve had many hotels that didn’t satisfy that requirement over the years, and I’ve always held the hotels to their guarantee.

I’ve always been firm but polite, insistent but courteous. And I’ve never had a single hotel refuse me service despite my more challenging requirement. I wonder if the same can be said for the OP.

Many if not most hotel chains/groups and even many finer restaurants have systems in place to keep track of commentary about customers.

It seems to me that only those who are disruptive, rude, or needlessly annoying should worry about any records of previous complaints. When complaints are reasonable, such a record goes to help future hotels plan accordingly to better satisfy their customers. When complaints are unreasonable, such a record goes to help future hotels perhaps avoid such customers.