Yes, in many cases. For "Smart Casual," "Cocktail," and rustic/winery weddings, a polished pair of R.M. Williams Craftsman boots (specifically in yearling leather) is a staple of Australian style and perfectly acceptable. However, for strict "Black Tie" weddings, traditional patent leather dress shoes or velvet loafers are preferred. Always check the venue: boots are great for Hunter Valley vineyards but might be too heavy for a Noosa beach wedding.