I would be very surprised if you encountered anything but the resort fee when you arrived (unless they included that in the upfront billing) or parking if you decide to use it. Just keep all your printed receipts (always have a second copy with you - my mother's paranoia - never give your only copy up LOL).
Just for laughs -
I booked a Sheraton room at Des Moines for a meeting last year (?maybe 2009?). Our conference rate was $139 or $149 & I did book that. I went in to check other rates such as
AAA & when I put that in the room came up as $11 a night for a DQ in Club Level!!! I booked it to see if it would actually process. Sure enough it did. So I printed both reservations for 3 nights stay - then called the hotel directly & asked to speak to the ressie manager. Told her they definitely had a problem with the system. I faxed her the copies & she asked if I needed both rooms. I said no & asked her to just cancel the extra room. Get this - she cancelled the $140 room!!! She left us in Club Level for $11 a night for 3 nights as she was so happy we had called & reported the data entry problem so they could get it fixed on their website. Talk about customer service!