What changes in Philadelphia?
The Convention Center's 45 docks feed from a Marshalling Yard 14 miles out, so labor call times follow the truck's numbered dispatch wave, not the hall's open time.
Source: paconvention.com

The Convention Center's 45 docks feed from a Marshalling Yard 14 miles out, so labor call times follow the truck's numbered dispatch wave, not the hall's open time.
Source: paconvention.com
A Pennsylvania Convention Center labor call should start with the offsite Marshalling Yard, roughly 14 miles from the building, because trucks are released from there to the 45 docks in numbered waves.
Source: paconvention.com
Put the assigned hall, yard check-in, dispatch reference, Vine Street entrance, equipment, build tasks, venue labor limits, and strike window on each call sheet. Do not roster one mass arrival against the public opening time. A lead should reconcile freight delays and approve crew releases as each truck clears its actual dock sequence.
Source: paconvention.com