Hey, that's actually worth sorting out before your flight. If you're planning to explore Phuket for several days, renting a car could solve both problems. You can check options at
https://roscarphuket.com and compare vehicles, rental conditions, and airport pickup arrangements. Just make sure to confirm whether collection is available at your arrival time, especially after midnight. I'd also check the insurance coverage, required documents, and total rental price before booking. It might be more convenient than arranging separate transfers every time you want to visit another part of the island.