When I tlked to National they said the Dolphin was open till 11 p.m. for drop off, I called the Dolphin and they said the desk closes at 4p.m. so you would have to use the valet for drop off. Alamo said we could not drop off that late since no one would be there.- Is there shuttle survice back to a resort after you drop off your vehicle after hours- Very interesting- the Hospital I work at is always telliing us- KNOW YOUR PRODUCT !