About three minutes. You'll need a shared link to the clips.
One video per play. Set the link so anyone who has it can view. Plays run in date order unless you tell us otherwise in the notes.
Put photos and the team logo in the same folder.
You get the reel as an MP4 file and as a YouTube link. YouTube and Instagram sometimes mute or block videos that use copyrighted songs. If that happens, the MP4 is still yours to keep and share.