If you are staying in a resort hotel, the evening life you are looking for is usually a drive away. In Antalya city, people head to Kaleiçi, the walled old town above the harbour, or to the busier city side of Lara and Konyaaltı. Further east, Alanya centre and Side town are the evening magnets of their regions.
Getting there is rarely the problem. Getting back late, tired, maybe in a group and in an unfamiliar place, is what deserves a plan. Book the ride home before you go out, agree the time and meeting point, and you will not have to negotiate anything at the end of the night.