(To those who are married) Do you remember all the guests who came to your wedding?

Usually, on the wedding day,
the bride and groom are busy with all the prior preparations,
then there's the ceremony itself, and after that, greeting people at the buffet...
It seems like it would be incredibly hectic.
After it's all over, do you actually remember who came to say hello or who attended?
Or do you only remember they were there after seeing the gift envelopes??