The permit lot is fairly large, and if you get an Amtrak monthly you can get the permit. Monthly permits start to get issued on the 20th of the previous month. They also tend to be sold fast. For April's permit, they will start to be sold on March 20th.
The parking lot is fairly large, and they offer a monthly parking pass. The monthly parking pass generally requires the purchase of a large SEPTA purchase (like a monthly trail pass), though an Amtrak pass might qualify as well. Check with the SEPTA ticket agent, to be safe
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