I have lived in turkey for 11 years and have visited a lot of the resort. liked most of them but want to live no where else but Alanya.
Alanya is a much larger resort than Marmaris Bodrum or Kuşadası. Entertainment is plentiful both Beach and Mountain. We have numerous night clubs and discos and restaurants for every taste and pocket.
Do try
The castle - eat the gozleme there
Dim Ã"¡ay valley - try the trout
Msot discos are at the harbour Robin Hood bar Bistro bellmen being very popular but do watch teh prices. A they do not get going till around 12 I suggest you drink in the restaurant off the main street where it will be cheaper and then head to the discos.
Depending where you are staying Dolmuş transport is cheap and runs till late. Taxis are plentiful but take from a rank not of the street. All have meters.
Auditorium disco goes on till early morning free transfer there BUT you have to pay to get back.. it is quite a walk.
There are plenty shops and bazaars for those who like to shop!!
There are boat tours, diving trips jeep safaris etc all that you would expect to find in a holiday resort.
Plenty to go see and explore for yourself as well - the roads are good and the views fantastic...
Have a great holiday...