The Harry Potter Festival, 11 a.m. to 5 p.m., will be bigger and better than ever this year! The street will be closed from Rex Avenue to Willow Grove Avenue but the festival itself will run for a full 10 blocks all the way to Mermaid Lane. Both the Festival and the Quidditch Tournament are free and open to the public.
This will be a fun event to attend and I am sure there will be people in interesting costumes. A good photo opportunity.
I have a busy Saturday and may be able to get there later in afternoon. Express interest in the comments and make you own arrangements to meet up. This is a free event, self guided. Have fun. Probably a good time to take the Chestnut Hill East train to Wyndmoor and walk west on Willow Grove Ave to Germantown Ave. This is a very popular event, so expect big crowds.