I listened to the audio book versions of the books. I wasn’t an early reader but I have read them all. I must have started sometime between 2005 and 2008 as they are missing from my “Books Read” list. I started keeping an electronic list as early as 2001 but had memorable Palm Pilot failure sometime in 2008. Books 4-7 appear in my 2009 list so that’s when I binged.
I saw one movie, found it tediously accurate and annoying and stopped all things Harry Potter until this LOAD.