score:8
First of all, August and September are "two big differences", as they say in Odessa. September the 1st is the start of school year, so lots of families with children will end their vacations near end of August. The worst you can do is try to leave Crimea in the last week of August. On the other hand, getting there at the same days may be easier than usual.
Second, waiting times for cars may indeed be long. There is, however, another way to get to Crimea and see the ferry on the way. Book a ticket on the train "Moscow - Simferopol". It doesn't pass through Krasnodar proper, but it has a stop in Timashevsk, some 50 km away. There is no bridge yet, so the passengers disembark in Kavkaz port and take a ferry to Kerch, just like motorists do. There will be almost no waiting time since the ferry is reserved for train passengers.
Upvote:4
This can be useful for you View from webcams near port where cars get on ferry http://www.gosparom.ru/webcams/video.php You can view and evaluate queues by yourself.
And yes - Crimea and Russia are one country. You don't need visa or extra documents for visiting it from Krasnodar.
Upvote:5
Russia consider Crimea as own territory. So there isn't any border control between Krasnodar krai and Crimea. The checkpoint on the E97 you meant isn't a border control point now, but just a security checkpoint.
Upvote:7
You can easily determine what your wait times and everything else on the site of the Kerch ferry (Russian).
Currently it lists wait time at 3 hours and you can see what the queue actually look like and guesstimate your own wait times on webcameras but as far as the border crossing is concerned: there aren't any.