OK, this I trust more!:
UEFA
The visa exemption applies to all ticket holders coming to Russia for the final in the period between 19 and 23 May. Supporters will need to present a valid match ticket, a valid passport and a completed immigration form upon entrance to the Russian Federation. All fans travelling to Russia without visas will be asked to keep their ticket up to departure from Moscow. Anyone overstaying the 72-hour entry period will then have to pay the fee for a regular visa when leaving the country.

