You are absolutely correct BeantownFlyer re hints and memories. Once I was on a interdepartmental team checking out the Hyatt Cerromer and Caribe Hilton in PR for a 150 room 7 day conference. Dealing with both sales departments went smoothly over each 2 day period, but upon ckecking out of the Cerromer all three of us had "extra fees", jacked-up tips, bar bills/tips for drinks never ordered, etc. It took us over an hour to get it straightened out, ie removed. About nil problems with the Hilton.
Guess where we booked that conference and subsequent events.