The distinction between policy and local regulation is crucial. A central ban would settle the issue across all venues; local restrictions could produce a patchwork of rules instead.
The report says World Cup stadiums will operate with two secure perimeters. If an outer security ring includes nearby car parks, supporters could lose access to the very spaces traditionally used for barbecues, drinks and pre-match gatherings.
That would not necessarily end tailgating altogether. It could move the activity away from stadium parking areas or force cities to create designated fan zones.
Tailgating is deeply connected to American sporting culture, particularly around NFL games and the Super Bowl. For many visiting fans, experiencing that atmosphere is part of the appeal of a tournament being hosted across the United States, Mexico and Canada.
The report says 78 of the 104 matches are scheduled in the United States, giving local parking and security decisions significance well beyond one host city. A restriction in Philadelphia, Dallas or another major venue could influence expectations for the wider tournament.
The concern has already surfaced ahead of United States vs Paraguay on 12 June. Supporters appear to be asking whether the World Cup experience will include familiar American traditions or be shaped almost entirely by stadium access controls.
The practical rules are likely to cover parking access, opening times, alcohol, cooking equipment and the distance between fan gatherings and security checkpoints. Those details may differ sharply between venues.
The next storyline will be the publication of host-city guidance. Until then, fans have a cautious green light rather than a guarantee: tailgating is not formally banned, but it may not be permitted at every stadium.