Things you wished you remembered/ thought of

What are some things you wish you remembered on your wedding day? Or would have thought to bring? I’m so nervous about forgetting something or not even thinking about something I would need
I don’t even know what I don’t know! I’m basically planning by myself bc I live states away from my family and my fiancé tries his best but he works really long hours and can’t have his phone on him
I’m just looking for some advice thank y’all !