If you buy a septa key card (5$ And if u register online within 30 days, you get the 5 dollara back in trip credit) you can ride the philly phlash (sort of like DC connector bus that takes you around from penn’s landing to the art museum on a loop).
Buying a key card, you have to do it at a manned station so like, regional rail stations (30th st where amtrak stops, suburban (comcast center) jefferson (reading terminal market) and the stops in suburbs in the morning)