As you have already experienced, winter is very different in Hisaronu and Ovacik and whilst I wasn't here last winter (I have been for the previous 4) I understand that it was quieter than ever! I think this is largely due to the lack of direct flights into Dalaman and it doesnt pay business' to be open just for residents and locals!
In Hisaronu you will find that some establishments such as Shanghai Blues open purely at weekends, which to be honest is a good option. In Ovacik there is considerably more open hence more choice.
Fethiye being a working town has plenty to offer, whilst in Olu Deniz there are only 1 or 2 business' open .. Kumsal Pide being one that also has a bowling alley attached, which is also open all year ... great for rainy days!
There are a number of local places open in Kaya as well as the kebab restaurants such as Oba and Cin Bal. Even places like Izela open for 3 nights a week .. so plenty of choice there ..
Quiz nights are definately a good option ... Fez is very popular on a Thursday night all through the winter .. a good scoal activity that also means you get to use your brain!
Yes there are walking groups ... Hash House Harriers being one and many people simply choose to walk with friends ... down to Olu, to Kaya etc. So much to explore and much more enjoyable than in the summer heat!!
Turkish lessons are also held at what was the old school in Ovacik. Two mornings a week for 2 hours ... I would highly recommend this as it's a great way of making new friends as well as getting a much needed handle on the language ..
Life is what you make it in the winter, it won't come to you so it does take a little effort on your part ..
I tend to shop more regularly and visit Fethiye more in winter. Everything is more leisurely and you make the most of the good weather when you get it .....
I love the winter, the fires and cosy laid back atmosphere of the bars and restaurants, where everyone has more time to chat whilst we await the season and summer heat to kick in all over again ...