Oh, I assure you, you won't find electrical outlets in ANY Ukrainian airport, at least not within the reach of your cord Don't count on WiFi hotspots either. They're just making their way in Ukraine, awfully slow I must admit.

In Europe electric outlets and hotspots are limited to business class lounges in most places...

Re: airports
Make sure your flight from Kiev to Mariupol takes off from the same airport. You will arrive in Borispil, and your domestic flight may take off from Zhulyany (or Airport Kyiv as it is called now), it's about 35 to 50 min away, depending on traffic.

Even if you depart from Borispil, I almost guarantee you that you will have to change terminals (within walking distance, no shuttle). You'll arrive to terminal B and will most likely take off from Terminal A (if you do depart from Borispil).

There's only a few gates (выход на посадку) at each terminal, so you won't be lost. In Borispil everything is marked in Ukrainian and in English, restrooms, customs and passport control, etc.

If you plan to use Internet/check e-mail regularly, I recommend getting a life GSM card. Only if you can sync your phone with your laptop (via Bluetooth or USB or Phone-2-PC cord). Ask the vendor to activate GIGAINTERNET and help you with the settings. They provide 1 Gb of traffic for 7$. At Kyivstar or UMC you will only get 7 Mb for that amount (no, this is not a typo). I use UMC as my primary cell phone, but bought life card just for Internet as I travel quite a bit.

Well... if there's anything else... keep us in the loop! And enjoy your trip in Ukraine!