you will be spolied for choice on restaurants and bars. Most places are restaurants up until 10pm when the entertainment starts. the entertainment stops at midnight, due to noise control, but you are welcome to stay and continue your night into the small hours, with some places playing quiet background music.
If you fancy a livelier night, there are two nightclubs in
Icmeler - Pleasure and Eastenders, both open till 4am if you fancy a late one. Alternatively you can go into
Marmaris where the bigger clubs are - i personally don't like it, too in your face, and don't have the same 'safe' feeling as in Icmeler, but it's all down to personal choice I suppose. You could always go through one night and see if you like it.