This is one you could probably do yourself. I'd be happy to do it, but you mention your upcoming marriage. You're going to be absolutely buried in photos soon enough, so maybe knowing this trick will help you out.
Step 1 — get your photos scanned. You did that. You're ahead of the game.
Step 2 — On your phone, download the Remini app. It's an AI photo enhancer. You get 5 five free enhancements per day. Not every result is a winner, but it usually does solid work.
Step 3 — In Remini, choose "enhance", select your photo, crop your photo, and once you're happy, let it do its thing. You can go for a second round of enhancements if you're not in love with the results of the first.
Step 4 — It can get some stuff wrong like colors in areas it confuses as part of something else. If that's the case, come back here and someone will fix it.
If that's all a bit too daunting, let me know, and I'll have a go.