We will be staying in Karon beach in 3 weeks time and want to go on a boat trip to Phi Phi, Phuket sail tours sound good but expensive. Would you recommend booking in advance or turning up.? also any other recommended boat tours that may be cheaper? Phi Phi sounds like a nice place to go but i know they do other trips to other islands on a sailing boat. as opposed to a speed boat. Any recommendations would be welcome,thanks.