The family that cannot be in the room
Every gathering has its absent list: the aunt who cannot fly, the father working nights, the friend still recovering, the grandparents for whom a first dance or a reveal is the event of their year. When those people are included by a stream, the technical part is embarrassingly fragile. A link sent to one person privately, forwarded to the wrong few, or pasted last-minute into a chat nobody reads.
A livestream link slot on the invitation page puts the link in the same place as the date and the address. Anyone who opens the invitation, on any screen in any country, finds the same single answer.