This event is cocktail attire.
Saturday's Celebration of Marriage will feature a buffet-style dinner with an array of Italian appetizers and a selection of pasta dishes, including spaghetti with traditional red sauce and chicken broccoli Alfredo. Guests can also enjoy a variety of protein options, such as meatballs, chicken Parmesan, and plain chicken cutlets.
If the invitation does not mention children, assume it’s an adults-only event. You can check with the couple if unsure.