Well maybe because they:
- were in a rush
- didn't have their phone on them
- don't know how to upload
- couldn't get a clean photo nor clear photo
- told off by security (I mean it is at Universal where the photo nazi's roam free)
- or any other valid reason.
There is no need to have a go at someone for providing information, just be thankful you got it, and don't expect more but be happy when you do get more.