I am currently in Russia on a 90-day student visa that expires in September. I have tickets to attend the FIFA Confederations Cup 2017 final match on July 2nd. Attending this event requires registering for a FIFA FAN ID, which gives access to the stadium. According to the FIFA FAN ID FAQ:
FAN IDs are issued to all spectators of the FIFA Confederations Cup 2017 for access to a stadium. FAN ID gives the opportunity to use free transport services on the match days in the host city the sports events. The foreign citizens, who come to the Russian Federation as spectators of the FIFA Confederations Cup 2017 matches, can use their FAN IDs for multiple visa-free entry into and exit from the Russian Federation upon presentation of valid identity documents that are recognized as such by the Russian Federation, during the period that starts ten days before the date of the first match and ends ten days after the date of the last match of the FIFA Confederations Cup 2017.
Considering the above, would it be legal for me to leave and re-enter Russia for tourism purposes (e.g. visit Finland or Estonia) by using my FIFA FAN ID?
It seems to me that the intended use of this feature of the FIFA FAN IDs is for travelers to enter Russia for the purpose of watching the FIFA Cup, not for visa-holders like myself to leave for tourism purposes.
Lastly, even if this is technically legal, is it a good idea?
I'd be interested in hearing the pros and cons of such travel.