Dh and I just did one in October at POR for our 15th anniversary. It was wonderful ... we wound around through the Alligator Bayou section and up through the Mansions, then over into the parking lot of POFQ. We were supposed to go all around POFQ (the other carriage did), but we had the slooooow horse (Ace) and if we'd gone on the regular route, the ride would've taken about two hours, LOL!!
It was at twilight, and the lights along the path were just coming on ... very, very romantic!

Dh says we're going to do it on every anniversary trip.