By definition all babies are beautiful, all brides are beautiful, and every wedding is a nice wedding.
Get an officient or clergy to come to wherever you're going to celebrate (a home? a restaurant? a park?) and make your vows. You may not have a receiving line for such an intimate gathering, but either the couple or their helpers should make introductions. This is not so much about people being perfect strangers as about making sure everyone has everyone else's name right and understands who is whom.
Everyone will want to socialize and exchange complements a bit before the food is served.
After food is served, you can have dancing. Even if your celebration is in a restaurant, you can push some tables out of the way and have some dancing. The music should be understated enough so that those who prefer conversation to dancing can converse without shouting.
Finally, have a dessert, like a small fancy cake.
If there are champagne toasts, the bride and groom should definitely propose a few toasts of their own. Not only for the sake of thanking and honoring others, but so that they aren't so busy ACCEPTING toasts that they never get to drink any of that lovely champagne.
Congrats and best wishes.