Fethiye is beautiful,you can take a nice 45 minute stroll from Calis though a lovely park and seafront.Stop At one of the many bars and cares along the kordon.Wander around the Pas partur Which is nice to see,no great hassle from anyone except the spice shop!
A day exploring is great.
You can also have a great night out ,taxis are cheap,or you could get the water taxi from Calis which is an experience not to be missed