[quote=@mskennedy615]
I thought that Muggles could not go to Diagon Alley... that muggle born children had escorts instead?
[/quote]

I don't remember if it's in the books, but in the movies we clearly see that Hermione's parents are talking to the Weasley's in Diagon Alley. It's the scene where Potter goes to buy Lockhart's books.
[img]
https://vignette3.wikia.nocookie.net/harrypotter/images/c/c1/Harry-potter2-mr_%26_mrs_granger.jpg/revision/latest?cb=20160714025257[/img]

Low-quality image of muggles in the Alley^^