What changes in Dallas?
An AT&T Stadium call seats 80,000 and sits 20 miles west in Arlington, so a Dallas usher crew is out of market and call times absorb the drive.
Source: en.wikipedia.org

An AT&T Stadium call seats 80,000 and sits 20 miles west in Arlington, so a Dallas usher crew is out of market and call times absorb the drive.
Source: en.wikipedia.org
AT&T Stadium is an Arlington assignment, roughly 20 miles west of downtown Dallas, with an 80,000-seat base configuration that can grow beyond 100,000 using standing room. Set calls from the actual travel and credential window rather than a downtown assumption.
Source: en.wikipedia.org
Attach the booked seating plan, entry gate, section posts, accessible routes, restricted areas, guest-services desk, and egress sequence. If standing-room areas are added, revise the usher map and briefing count; do not treat the expanded house as an automatic feature of every stadium date.
Source: en.wikipedia.org