THE PLAN BEFORE THE KEYS
Keep the plan small. Make the day yours.
Antiparos rewards a simpler transport plan than its larger neighbour. Hora and the port share a compact setting, and several nearby beaches suit a stay with plenty of walking. The Cave of Antiparos and a day toward the south create a different itinerary, so match the rental period to the trips you actually want to make.
The main decision is whether to collect a vehicle on Antiparos or bring an approved rental from Paros. Those choices involve different pickup arrangements and contract permissions. Do not assume a company serving both islands allows every vehicle to cross. If you stay near the port, compare a short rental with the cost and convenience of keeping a car parked throughout your visit.