I hope to take the train from Istanbul thru Ankara to Kars in late September. Does anyone have experience or knowledge about the trains? What is the chance that the sleepers will sellout? Also, any recommendations for hotels in Kars? Thanks
Most of what I know about them is summarized at https://www.ricksteves.com/travel-tips/transportation/trains/turkey-rail-passes. Fast trains on the first leg can't be booked more than 10 days ahead. https://www.seat61.com/Turkey2.htm has more info and links for using the Turkish rail way web site.