wife and i stayed at the pebble beach resort for our tenth anniversary. told them at the time i made the reservation that it was our anniversary, not expecting anything or realizing it would matter. booked a garden view room, which basically meant a room on the backside of the lodge facing the parking lot. when we got there for check-in, discovered they had upgraded us to a suite overlooking the 18th green. played the first 18 that morning, and the 19th that night. also watched Titanic win best picture oscar from there. there was a bottle of champagne waiting in our room for us, as well.
by all means let them know it's your anniversary.