In English only the flights and tickets appear to be "subject to availability" and you will get "a voucher worth two nights in a double room in the five-star Fairmont Grand Hotel Kyiv for the winner and his/her companion".
On the other hand:
"Upon delivery of the prizes ("etix®" electronic ticket, hotel voucher for overnight stay, and two European Football Championship tickets to the UEFA EURO 2012™) to the winner, Lufthansa shall be freed from all obligations.
Any and all relevant service level agreements shall be made exclusively between the winner and/or his/her companion, the Fairmont Grand Hotel Kyiv and the UEFA. Lufthansa can accept no responsibility for such matters with regard to the winner and his/her companion."
So you might receive a hotel voucher and tickets but they could be totally useless.
