Likely match cities for Poland: New York, Philadelphia, Chicago area. Use the Fanpath tournament simulator to map Poland's most probable bracket path across all 16 host cities before booking anything.
Polish communities in Chicago, New York, and Philadelphia will create massive local support for any Poland group games there.
Solo fan cost estimate: $3,800β$8,500 solo excluding international flights. Coordinating with other Poland fans through Fanpath (shared accommodation, group transport) cuts this by 40β60%.