Lumen Field has long established its place as one of the toughest venues in the NFL. The loudness of 67,000+ people at the Seattle Seahawks home makes it difficult for opponents to play in stadiums not suitable for playing surfaces or weather conditions.
If you're playing in Seattle this year will give you a few advantages in play. IGN will explain this to me since I don't have early access to any of these items. This is applicable to all 32 teams. However, this is Field Gulls and it's not as if you're interested in the advantages that the Detroit Lions receive.