There’s no “fashionably late” when it comes to weddings. Arriving late to the ceremony or reception can be considered highly disrespectful to the wedding party’s preparation and the couple’s celebration. A good rule of thumb is to be 20 minutes early from the time listed on the invitation.
Aside from being on time, also limit your tech use. As a guest, it’s important to be present in the moment and not be glued to your phone. Greet and congratulate the couple, socialize with friends and other guests, and appreciate the fun moments.