Some Royal Palms buildings are the closest to the entrance to the Marriott property, the first RP building is about 0.2 of a mile from SR 536. Imperial Palm Villas are next closest - about 0.3 of a mile, then the remainder of Royal Palms - even those at the back (just under a half mile). Sabal Palms is the furthest away from the property entrance, between a half and three quarters of a mile depending on which building you're in. And the road that leads back to Sabal Palms is, indeed, a service road that also serves the back of the convention center, the back of a part of the hotel, the hotel's parking structure and some other storage and maintenance areas.
Dick Taylor