First of all, we should say that Fethiye is a town and Antalya is a metropolitan city. I say this in the first place because many people don't know this, so they can be unfair to one another when comparing.  If you are looking for a 100% holiday area, you should look at Oludeniz in Fethiye. In Antalya, the places that will meet your needs are the districts of Antalya. Places such as Kundu, Belek, Kemer, Side, Alanya, Kas, Olympos, Cirali, Adrasan etc. Each destination has its own unique details and vacation spots. Let's say that you want to do paragliding and canyoning. Then Fethiye is the place for you. But for rafting, the Manavgat district of Antalya is great. You can explore the wonderful Koprulu Canyon Turkey from this amazing guide. Also for shopping, Antalya has amazing shopping malls and bazaars. If you are asking for what to buy in Antalya, you may enjoy this ANTALYA SHOPPING MALLS guide.   Moreover, there are incredible museums and ancient cities in both regions. If you are planning a cultural trip, I would definitely recommend seeing both places. Because where Fethiye ends and Kas begins, the ancient cities of Letoon, Xhantos, and Patara are just a few of the magnificent spots that you must see.