Some resources:
1. For Guitar Solo:
- Jerry Snyder's "Wedding for Guitar":
https://www.amazon.com/Wedding-Guita.../dp/0739002481
- "To Have and to Hold" from Hal Leonard:
https://www.amazon.com/HAVE-HOLD-CLA.../dp/1575603098
- Classical Guitar Wedding Songbook:
https://www.amazon.com/Classical-Gui...assical+guitar
- FINGERPICKING WEDDING SOLO GUITAR:
https://www.amazon.com/FINGERPICKING...XTC1GN59T9RJWR
2. A Classical Guitarists Guide to the Top 20 Guitar Songs for Weddings:
https://www.alivenetwork.com/blogs/e...log.asp?id=186
3. The Wedding Gig: how to play music at a wedding: (includes free sheet music pdf downloads)
https://www.thisisclassicalguitar.co...c-wedding-gig/
4. Discussion at Delcamp:
https://www.classicalguitardelcamp.c...ic.php?t=55668
5. For guitar and flute: Mychal Gendron's "Wedding Music for Flute & Guitar":
https://www.melbay.com/Products/9473...e--guitar.aspx