I went to Phillie April 30-May 1st.
Was very fun, got to walk around, saw Independence Hall, Franklin Institute and Battleship New Jersey (Which is motherloving huge). It drizzled, but we managed. We stayed at a hotel (And as we were flipping channels, saw some show on HBO about carrots on drills and using them to make researchos), ate nice hamburgers at a good pub, and had fun on the bus ride even.