^^^ agree as above
went to phuket a fair few years ago, stayed at meridien just above Karon beach, hired motorbike etc but refused to hand over passport, passed over something else as said above, would take own baby formula, tuk tuks dirt cheap into patong for eating, negiogate price first or ask someone in hotel, u should not have a problem with security in a 5 star hotel, eating and drinks in small local restaraunts was about $20 aussie for a couple, hotels $100 so a fair difference in price and food was better in small places. Phuket town waste of time, u will just be taken to some relations shop or the major shopping centre which was poor, better shopping in patong, have a great trip


Edit
I think u need to get international drivers licence if u want to use motorbikes or cars, pretty easy, i hired a kawaski 1100cc roadstar harley lookalike thing and kept if for 3 days and saw most of the island, just dont crash or if u do u better get up quick and get out of there