We get lots of posts on here about how unwanted people sometimes feel if they only get an invite to the evening do after a wedding, and some of them are from people who would really have liked to go to the ceremony but can't hang about afterwards until the evening.
What if the b&g had a big drinks reception with canapes and cakes for everyone invited immediately after the wedding, in the afternoon, and then invited the closer members of the family and special friends to a dinner/music/dancing later on -sort of having the evening do first?