1: it would definitely be a joyous event, probably not huge. Shadow would want his wedding outside, possibly on a hill overlooking the ocean. Where the sky is pretty, the wind is right...
...and he can throw sonic over the edge😏

2: Ana would literally be jumping for joy, it was finally the day! She would cry practically every ten minutes, and have to re-do her makeup over and over again. Her dress would be this

3: Shadow would most likely where a sharp looking tux, or simply a bowtie at his neck since his fur is already black and white, resembling a tux. He'd definitely do his 20 minute skin care routine to look young--even though he always looks young--and he would have made sure his quills looked nice.

4: of course overprotective brother Sonic would give Shadow The Talk. And of course cry on Ana's shoulder.

5: since Ari is Ana's bestie, and soon to be sister-in-law, she is The Maid Of Honor :)  _Angelic_Amy_

6: It takes a ton of willpower to keep Shadow from getting choked up when he sees Ana walking down and taking her place beside him. And of course, the smile on her face would be huge.

7: When the vows are spoken, Shadow says his in a clear voice, not missing a beat. Ana may fumble over her words, and try to make a joke about it.

8: but, when the kiss happens...

Ana: "Hey, it's time for the kiss, Shadow? SHADOW--!"
Shadow: *spins Ana, romantically dipping her, before kissing her deeply, one hand cupping her face*
Ana: *flustered* "what..what just happened?"

9: when the celebration starts, of course they cut a cake. Shadow wanted coffee cake soooooo...Ana will try to feed him a bite, and after three attempts, she finally convinces him, only to purposely smear it on his face.
If it was anyone else who did that, Shadow would take a whole handful and aggressively do it back. But it's Ana...damn.

10: definitely a nice romantic dance to a Taylor Swift song!!

11: Ana will dance with both Ari and Sonic _Angelic_Amy_ ;)

12: And last but not least, a ride on Shadow's bike to there new home. He may have used the chaos emerald to cause a little firework show. show off.