Unfortunately this is a common practice in the Dominican Republic, even well know American Brand Hotels (i.e. Hard Rock) charge a copyright fee for an outside photogrpher. It is upseting I guess if you don't want to pay the fee you can have your whole wedding at Jellyfish, but there is not a dressing room there. Money grabbing practice, maybe you can tell her that due to the fee your are considering moving your ceremony to the Jellyfish unless the fee can be discounted. That might help them change their mind..... Good Luck!